Fuka Koshiba’s Beauty & Wellness Routine: Skincare, Pilates, Diet & Sleep

With her luminous complexion, warm, approachable smile, and remarkable ability to transform herself for different roles, Japanese actress Fuka Koshiba has become a familiar face in television dramas and films. Behind her natural charm lies an interesting collection of skincare habits, wellness routines, and personal interests that have evolved throughout her twenties.

From choosing different sheet masks according to her skin's condition to preparing for important shoots, exploring Korean skincare products, and refining her cleansing routine in 2026, Koshiba has gradually developed a more thoughtful approach to beauty.

Her approach to health has an equally fascinating history. As a child, she trained in figure skating six days a week. Later, as an actress, she began working with fitness trainers to prepare for physically demanding roles. In 2025, she also revealed that she had introduced protein into her breakfast routine and started attending Pilates classes.

Away from work, she enjoys knitting, cooking, spending time with family, and exploring new destinations. In 2026, she began journaling to better understand changes in her mood and physical condition.

Drawing on interviews and publicly available information, this comprehensive look at Fuka Koshiba explores her beauty routine, skincare, diet, supplements, exercise, sleep, haircare, relaxation habits, family relationships, and experiences with fellow actors.

1. Fuka Koshiba's Career and Famous Roles: From Figure Skater to Actress

Fuka Koshiba was born on April 16, 1997, in Osaka Prefecture, Japan. She won the Grand Prix at a talent audition in 2011 and made her acting debut in the television drama Iki mo Dekinai Natsu (Breathless Summer) in 2012.

Her major breakthrough came in 2014, when she took on the lead role of Kiki in the live-action film Kiki's Delivery Service. Her performance earned her recognition, including the Blue Ribbon Award for Best Newcomer.

She subsequently appeared in the NHK morning drama Asa ga Kita, portraying Chiyo Shiraoka, and earned further recognition for her performance as a devoted special-effects television fan in the 2019 drama Tokusatsu Gagaga.

Her career has included a wide variety of productions, such as Yokai Share House, She Was Pretty, Nami yo Kiitekure (Wave, Listen to Me!), Ooku, and GO HOME: Metropolitan Police Department's Unidentified Persons Consultation Office.

In 2025, she portrayed Hananō, later known as the fifth-generation Segawa, in the NHK historical drama Berabou. She also co-starred with Takeru Satoh in Marry My Husband.

In 2026, she continued expanding her career with projects including the historical drama Akinai Seiden Kin to Gin 3 and voice acting in Chimney Town Poupelle: The Clock Tower of Promise.

These varied roles help explain why beauty and physical maintenance have become increasingly important parts of her professional life. Contemporary dramas may require subtle makeup and particular physical movements, while period dramas often involve elaborate wigs, traditional clothing, and long shooting days.

Yet the foundations of Koshiba's work ethic were established long before she entered the entertainment industry. Her childhood passion for competitive figure skating taught her to set goals, work consistently, and persevere through demanding training schedules.

2. Skincare, Face Masks and Cleansing: How Her Beauty Routine Has Evolved

Discovering Skincare That Suits Her Changing Needs

One of the most relatable aspects of Koshiba's beauty journey is that she did not always follow an elaborate skincare routine.

In a March 2025 interview with Japanese beauty magazine Biteki, she explained that she had begun taking skincare more seriously around the previous year. She started researching well-reviewed products, exploring creams that attracted attention, and trying different items to find what felt suitable for her skin.

As an actress, her schedule sometimes involves long filming hours and limited sleep. She mentioned trying a cream marketed around the concept of caring for skin after insufficient sleep, reflecting her interest in adapting skincare to her demanding work schedule.

As early as 2023, Koshiba had spoken about becoming more aware of changes in her complexion and developing an interest in beauty care through diet and supplements.

Over time, her approach shifted from relatively simple daily care towards paying closer attention to how her skin felt and responding with different products and techniques.

Choosing Face Masks According to Her Skin's Condition

Sheet masks are among the most frequently mentioned products in Koshiba's beauty interviews.

At a promotional event for the film Sadako DX in October 2022, she explained that she kept approximately three types of facial masks: vitamin-focused, soothing, and moisturising varieties. She selected them according to how her skin was feeling.

In a 2023 interview with bis, she said that she was using a face mask every day at that time. When her skin felt dry, she preferred moisturising masks. When she was concerned about spots, she sometimes selected soothing products.

She had also changed the order of her routine. Rather than applying a mask immediately after bathing, she began using toner or lotion first and then applying her sheet mask.

By 2025, face masks had also become part of her preparation for important filming days. She mentioned choosing a sheet mask containing glutathione before certain shoots.

Her approach illustrates how she considers both her everyday skincare needs and the demands of her acting career when choosing beauty products.

Revisiting Cleansing and Facial Washing in 2026

In a March 2026 interview with Biteki, Koshiba described a renewed interest in the fundamentals of cleansing.

Having used oil cleansers for a long time, she began experimenting with cleansing balms, including the mung bean cleansing milk balm from Korean skincare brand beplain. She particularly liked its moisturising feel and the way her skin felt after washing.

She also began paying greater attention to emulsifying cleansing products properly during removal. Concerned about the appearance of pores around her nose, she wanted to be more careful about her cleansing technique.

Her facial washing routine became more deliberate as well. She focused on creating generous foam and gently cleansing without unnecessarily rubbing her skin with her fingers.

In another interview from 2026, Koshiba revealed that she had even purchased a tool for whipping facial cleanser into a thick foam. She enjoyed the texture of the foam and the process of taking a little extra time over her daily routine.

She also mentioned using a wash-off clay mask approximately once every one or two weeks at that time.

These details reveal an actress who increasingly enjoys learning about skincare techniques, rather than simply purchasing new products.

Exploring Korean Creams and Facial Mists

Around the end of 2025, Koshiba became concerned about small breakouts and other changes in her skin.

She researched skincare information on social media and decided to try products that interested her.

In 2026, she mentioned purchasing a cream and mist from the Korean skincare brand KOPHER, including Curipair Mela Cream and Curipair Derma Ampoule, a mist she used when touching up her makeup.

These products were items Koshiba said she had purchased or tried at the time. Her experience reflects her personal skincare preferences rather than a promise of particular results.

Her makeup preferences have evolved too. While she previously enjoyed deeper brown-toned lip colours and stronger makeup looks, by 2026 she said she was increasingly drawn to softer shades that blended naturally with her complexion.

Both her skincare and makeup choices appear to reflect her interest in finding what feels right for her at each stage of life.

3. Sun Protection, Haircare and Eyelash Beauty: Attention to the Details

In her 2023 interview with bis, Koshiba explained that sun protection was an important part of her skincare habits.

Because she felt she was prone to freckles and pigmentation, she tried to reapply sunscreen regularly, carry a parasol, and choose shaded walking routes when possible.

Outdoor filming sometimes meant spending extended periods in the sun. After such days, she mentioned taking vitamin C or using vitamin-focused sheet masks as part of her personal routine.

These were her individual habits at the time, rather than assurances about what particular ingredients can achieve.

Her approach to haircare has been similarly exploratory. In 2023, she described trying shampoos and conditioners recommended by others, as well as products that caught her attention, in search of options she enjoyed using.

By May 2026, fragrance had become one of the qualities she particularly valued in haircare.

Bathing was already a favourite part of her day, and she wanted the scents surrounding her to feel pleasant and relaxing. Rather than overpowering fragrances, she preferred something gentle and subtle.

For Koshiba, choosing haircare products was not only about how they felt on her hair; it was also about enjoying the experience of using them.

In 2026, beauty became connected with a particularly personal family milestone when her younger sister prepared to open an eyelash salon.

Koshiba revealed that she had become her sister's first customer. She shared her experience of having an eyelash perm and later received a treatment for her lower lashes as well.

Her sister had worked towards establishing a business specialising in eyelash beauty, and Koshiba was delighted to support that new chapter.

It is a charming example of how her interest in beauty connects naturally with her close relationship with her family.

4. Diet, Protein and Supplements: Adapting Her Wellness Habits

Adding Vegetables During Busy Filming Schedules

Koshiba's approach to food reflects the realities of working on television and film sets, where catering and packed meals are common.

In 2023, she told bis that she sometimes found it difficult to eat enough vegetables while filming. To add more variety, she would buy a salad from a convenience store to accompany her meal.

In a 2024 interview, she again mentioned trying to include vegetables in her diet, sometimes eating them at the beginning of a meal or adding a salad alongside the food provided on set.

She also spoke about regularly enjoying yoghurt. During an interview associated with an advertising campaign, she described adding MCT oil to yoghurt as part of her routine at the time.

Rather than following a rigid daily meal plan, she adapted her food choices to the schedules and circumstances of her work.

From Weight Management to Paying More Attention to Protein

In 2023, Koshiba said she was checking her weight in the morning and evening and paying attention to what she considered a comfortable weight for herself.

She sometimes adjusted the amount of rice in her packed meals. However, her goal was not simply to become lighter. She explained that losing too much weight could make her cheeks appear hollow, so she occasionally increased her food intake when her weight fell below her preferred range.

These were personal choices related to her appearance and professional circumstances, not a universal approach to weight management.

By November 2025, her priorities had expanded to include nutrition and movement.

In an interview with sweet, she explained that she had taken a genetic test to learn more about her physical characteristics. She said she had been advised that she might be prone to losing muscle and should pay attention to protein intake.

Following that experience, she changed her breakfast to a protein drink and began attending Pilates classes.

She also reflected on previously finding exercise less appealing and sometimes relying more on food intake to manage her weight. As she approached her thirties, she became increasingly interested in including movement in her everyday life.

The genetic test was part of Koshiba's personal experience. Its findings should not be interpreted as a definitive assessment of nutritional requirements or muscle health for everyone.

Her growing interest in protein is particularly interesting given her childhood history as a competitive figure skater. Training for competition and exercising to support a busy adult lifestyle are very different experiences, and her goals have naturally changed over time.

In 2023, she had also mentioned purchasing a collagen supplement while travelling in South Korea. Over the following years, she spoke about paying attention to protein and vitamins.

Each of these habits reflects what she reported at the time of the relevant interview; they should not all be assumed to be part of her current daily routine.

Making Water Intake a Personal Goal

Koshiba has been refreshingly candid about aspects of healthy living that she finds challenging.

In 2023, she said that she was not particularly good at drinking water throughout the day. Sometimes she struggled to finish a 500 mL bottle, and she wanted to work towards drinking at least one litre daily.

This was her personal goal at that time, rather than a general recommendation for daily water intake.

She has also spoken openly about her food preferences. She was not especially fond of green peppers or capsicums and tended to prefer lighter meat dishes, such as yakitori, over richly marbled beef.

Her enjoyment of food also extends to travelling, where she likes discovering local specialities and interesting restaurants.

5. Figure Skating, Gym Training and Pilates: How Exercise Supports Her Acting

Training Six Days a Week as a Young Figure Skater

Koshiba's athletic background began long before her acting career.

Inspired by Shizuka Arakawa's gold-medal performance at the 2006 Turin Winter Olympics, she began figure skating around the third grade of elementary school.

She had already tried activities including karate, ballet, and gymnastics, but figure skating became the sport that truly captured her imagination.

Her training schedule was demanding. For approximately five years, she practised six days a week, leaving home while stars were still visible in the early morning sky.

She would practise before school, attend classes, and then return to training afterwards.

Each competition provided a new goal: mastering another jump, improving a ranking, or performing more confidently than before.

She sometimes wished she could spend more time playing with friends, but the excitement of achieving her skating goals encouraged her to continue working hard.

When she entered the entertainment industry in 2011, she initially considered balancing acting with figure skating.

However, acting and vocal lessons also required attendance six days a week. She ultimately chose to focus on acting rather than divide her efforts between two demanding careers.

In a 2021 interview with Fujinkoron, she explained that the perseverance developed through figure skating continued to influence the way she approached her acting work.

Gym Training for Physically Demanding Roles

In 2023, Koshiba described trying to visit the gym approximately once a week when her schedule allowed.

She worked with a trainer who checked her running technique and designed exercises around the areas she wanted to train.

Her preparation for the drama Wave, Listen to Me! was especially physical. The role involved outfits revealing her legs and midriff, along with scenes requiring her to throw another person.

She therefore made an effort to attend the gym whenever she could. She later described noticing changes in the definition of her abdomen and the balance of the muscles in her legs.

Exercise was not simply a separate hobby; it could become part of preparing convincingly for a character.

In the 2024 drama GO HOME, she portrayed one half of a detective partnership alongside Yuko Oshima.

According to Oshima, Koshiba also practised at her regular gym to prepare for a kickboxing scene.

The two actresses developed a warm relationship on set. Koshiba affectionately called her co-star "Yuko-neeyan", a familiar, older-sister-like nickname.

Oshima recalled that they often talked between scenes and sometimes found themselves laughing simply by making eye contact.

By 2025, Koshiba had added Pilates to her exercise routine. From rigorous childhood skating training to gym sessions for specific roles and Pilates as an adult, the purpose of exercise in her life has evolved along with her career.

6. Sleep, Bathing and Physical Care: Finding Comfort in a Busy Schedule

Long filming days can make it difficult to maintain a consistent sleep schedule, and Koshiba has spoken openly about making the most of opportunities to rest.

In 2023, she said she tried to sleep whenever she had the chance. She often slept during journeys between filming locations and considered her ability to fall asleep in different places one of her personal characteristics.

She also felt that her skin and overall condition were better after a good night's sleep.

In a 2024 interview with LANDOER, she described the happiness of sleeping without an alarm and drifting back to sleep after waking in the morning.

For someone whose working hours are frequently determined by production schedules, a leisurely morning can feel like a genuine luxury.

Bathing is another habit that appears consistently throughout her interviews.

In 2023, she said she loved baths and often spent approximately 20 to 30 minutes soaking in the tub. She sometimes brought an iPad into the bathroom to watch YouTube, especially travel vlogs about South Korea.

In a 2024 interview, she described making time for a bath even when she felt sleepy.

By 2025, she had assembled a small collection of favourite bath products, mentioning that she kept approximately four types of bath additives and chose among them depending on her mood.

Bathing also became a way to draw a boundary between work and personal time.

When deeply involved in a production, she sometimes continued thinking about lines from the script after returning home. During her bath, however, she preferred to focus on something enjoyable, such as watching videos or imagining future holidays.

Her approach to physical maintenance has also evolved through her work in historical dramas.

In December 2024, she told LANDOER that heavy wigs, traditional clothing, and long periods of kneeling sometimes placed strain on her neck, shoulders, and knees.

Those experiences encouraged her to pay closer attention to physical care. She mentioned massage, stretching, and occasionally arranging acupuncture appointments.

As a child, she trained her body to compete. As an actress, she trained for roles. With experience, she also began making more room for rest and maintenance.

7. Journaling, Knitting and Cooking: Making Time for Herself

Starting a Handwritten Journal in 2026

In 2026, Koshiba introduced a new habit to help her understand herself better: journaling.

In an interview, she described writing down details such as the weather, her weight, physical condition, and events associated with changes in her mood.

Previously, she sometimes forgot exactly what had happened on days when she felt upset or physically uncomfortable. By recording those experiences, she hoped to recognise patterns when looking back through her notes.

An important part of her approach was keeping the habit flexible.

Rather than insisting on writing every single day, she preferred to record things when there was something she wanted to remember or examine later.

She enjoyed the act of handwriting itself and saw the journal as a way of becoming more familiar with her own feelings and routines.

For Koshiba, journaling is a personal reflection practice, rather than a way to diagnose health concerns.

It also fits with her stated intention to spend her final year in her twenties learning more about herself.

Knitting and Cooking as Enjoyable Ways to Focus

Knitting has been one of Koshiba's favourite hobbies for several years.

In 2024, she mentioned using a small tote bag that she had knitted herself, even bringing it to filming locations.

In a 2025 interview with sweet, she explained why the hobby suited her so well.

Following knitting patterns and counting stitches required concentration, allowing her to become absorbed in the task rather than thinking about work.

As an actress, she often spends time memorising lines or reflecting on a character. Knitting provides a pleasant change of pace.

By 2026, she was also creating handmade gifts for people close to her.

She knitted a character-themed item for her younger sister, who was preparing for a trip to Disneyland.

She also created a customised pouch for actor Tomohito Yashima. Drawing on the familiar imagery of a video game character, she changed the letter on the character's cap to the Japanese character "八" and added spectacles to make the design resemble Yashima.

Her enjoyment of making things extends to cooking.

In a 2024 interview, she spoke about liking detailed preparation tasks, such as removing the veins from prawns and finely chopping spring onions.

Rather than focusing exclusively on the finished meal, she genuinely enjoys becoming absorbed in the small tasks involved in preparing it.

Knitting and cooking offer her different forms of the same pleasure: concentrating on something tangible at her own pace.

8. Family, Sisters and Marriage: The People Behind Her Journey

Three Lessons from Her Mother

During her figure skating years, Koshiba's mother taught her three principles that she has continued to value.

They centred on working towards a dream, refusing to give up on that dream, and imagining herself succeeding.

In a 2021 interview with Fujinkoron, Koshiba explained that these lessons remained an emotional source of support.

Although people sometimes assume she must be mentally strong because of her sporting background, she has acknowledged experiencing insecurity and discouragement like anyone else.

When she worries about whether she can perform a new role successfully, she sometimes seeks her mother's advice.

Her mother has encouraged her to trust the director's decision to cast her and approach the role with confidence.

At other times, her mother has been willing to offer frank criticism when Koshiba seemed to be getting carried away with herself.

That combination of encouragement and honesty has remained important throughout her career.

Growing Up as the Middle of Three Sisters

Koshiba is the middle child of three sisters.

Her older sister played a role in the beginnings of her entertainment career. When the young figure skater became interested in appearing in television commercials, her sister provided her with a magazine containing audition information.

That opportunity eventually led to her successful 2011 audition and the start of her acting career.

Her relationship with her younger sister has also evolved over the years.

In a 2025 interview, Koshiba recalled going out for a meal with her sister and talking openly about feelings they had found difficult to express during their younger years.

As adults, they could revisit earlier misunderstandings with a different perspective.

In 2024, Koshiba had spoken about living with her mother and younger sister and maintaining close connections with her older sister's family and grandparents in Osaka.

She has also shared affectionate stories about her nieces and nephews, including visiting Osaka after the birth of a nephew and giving spending money to a niece before a school trip.

Television programmes have highlighted further examples of her generosity, including helping with her younger sister's education expenses and giving her camping-loving mother a vehicle.

When her younger sister prepared to launch her eyelash salon in 2026, Koshiba was delighted to celebrate the achievement.

These family stories reflect what she shared during interviews at different times and do not necessarily describe her current living arrangements.

Koshiba has also spoken about her interest in marriage and family life. Reports about her romantic relationships appeared in the Japanese media in 2026, but as of October 2026, a formal marriage announcement from Koshiba or her agency had not been confirmed.

Her public comments and family stories offer a picture of someone who values close relationships alongside a demanding professional career.

9. Travel and Food Adventures: From Staying Home to Exploring Japan

From South Korea to Toyama, Aomori, Tokushima and Okinawa

Koshiba once described herself as someone who particularly enjoyed staying home during her days off.

However, her enthusiasm for travel has grown noticeably over time.

In 2023, she visited South Korea, where she enjoyed shopping for beauty products and exploring local food.

After returning home, she continued watching travel videos and researching places she hoped to visit on another trip.

Following the pandemic years, she became increasingly interested in exploring the places she travelled to for work rather than spending her free time exclusively in hotels.

In 2025, while filming in Toyama, she decided to try visiting an izakaya, a Japanese-style pub, by herself for the first time.

As she sat at the counter, two women nearby recognised her and struck up a conversation. They shared a toast and some food, turning the visit into a memorable experience.

Koshiba later recalled how much she enjoyed that unexpected interaction.

She has also described asking colleagues about good local restaurants and saving recommendations so she can visit them when she has time.

In 2026, she began pursuing her goal of visiting all 47 prefectures of Japan.

After sharing experiences from Aomori, she travelled to Tokushima, where she visited the Naruto area and enjoyed local foods including wakame seaweed miso soup and fish dishes.

She also shared photographs from a family trip to Okinawa in October 2026. During family holidays, she has enjoyed trying new activities, including snorkelling.

These experiences show how her interests have expanded beyond her traditionally home-centred hobbies.

Travelling to Shimane with Her Friend Ai Moritaka

In 2026, Koshiba also shared a trip to Shimane Prefecture with her close friend, actress Ai Moritaka.

The two enjoyed sightseeing, food, and relaxed moments together, including wearing yukata and visiting a shrine.

Moritaka also appeared in photographs connected with the opening of Koshiba's younger sister's beauty salon, reflecting a friendship that extends beyond their professional activities.

Whether travelling with family or friends, Koshiba increasingly enjoys creating new memories outside the filming studio.

For someone who also loves quiet activities such as knitting and cooking, travel has become another way of enriching her personal life.

10. Co-Stars, Career Growth and Approaching Her Thirties

Finding Support Through Conversations with Takeru Satoh

In 2025, Koshiba co-starred with Takeru Satoh in Marry My Husband.

Her character experiences a second chance at life and gradually learns to stand up for herself.

Koshiba explained that she sometimes struggled with how strongly to portray this transformation. The change needed to be satisfying for viewers while still feeling believable.

She discussed these concerns with Satoh, who encouraged her to have confidence in the director's decisions about scenes they had already filmed.

She said she found that reassurance helpful.

Their conversations were not always serious, however. Between scenes, they sometimes chatted about lighthearted subjects, such as which sea creature they would choose to become if given the chance.

Her accounts suggest that she values both thoughtful professional discussions and relaxed moments with colleagues.

Preparing for Singing and Voice Acting

In the 2026 animated film Chimney Town Poupelle: The Clock Tower of Promise, Koshiba voiced the character Nagi.

The project also involved singing, and she described undertaking vocal training in preparation.

She paid attention to how her voice would balance with those of her fellow performers and how best to communicate her character's emotions.

From mastering jumps as a young skater to physical training for acting roles and vocal preparation for animation, her career has consistently involved learning new skills.

Making Room for Enjoyment and Personal Growth

In interviews during 2025 and 2026, Koshiba reflected on how she wanted to spend her time as she approached her thirties.

She enjoys working and remains enthusiastic about challenging roles. At the same time, she increasingly wants to make space between productions for travel, hobbies, and other personal experiences.

In 2026, she described her final year in her twenties as an opportunity to get to know herself better.

Trying new skincare products, attending Pilates, and keeping a journal were all part of this broader interest in understanding her own preferences and daily rhythms.

She has also spoken about trying to find enjoyment in whatever she is doing.

Sometimes that means looking forward to a conversation with someone at work. At other times, it might involve planning a delicious meal after a demanding day.

For Koshiba, determination and enjoyment are not opposing ideas. Her childhood training taught her the value of sustained effort, while adulthood has encouraged her to appreciate rest, relationships, and ordinary pleasures.

That balance is an increasingly important part of the person she is becoming.

Conclusion: Fuka Koshiba's Evolving Approach to Beauty and Wellbeing

Looking across Fuka Koshiba's interviews and personal experiences, one theme stands out: her willingness to adapt her habits as her life changes.

In skincare, she has progressed from relatively simple routines to exploring different face masks, cleansing techniques, creams, mists, and clay masks, always with an interest in what feels suitable for her.

Her approach to food has developed from adding vegetables to meals and monitoring her weight towards paying greater attention to protein, nutrition, and Pilates.

Her childhood figure skating experience continues to influence her dedication to work, while her acting career has inspired new forms of physical training.

At the same time, she values sleep, bathing, gentle fragrances, knitting, cooking, and discovering new places.

By introducing journaling in 2026, she also began paying closer attention to changes in her feelings and physical condition.

Throughout her career, the encouragement of her mother, the support of her family, and her conversations with fellow actors have been important parts of her journey.

Her beauty and wellness habits are not built around one extraordinary secret. Instead, they reflect years of curiosity, personal experimentation, determination, and a growing appreciation for spending time in ways that feel meaningful.

For Fuka Koshiba, caring for herself appears to be as much about understanding her own changing needs as it is about skincare or exercise. It is this balance between hard work and everyday enjoyment that makes her approach so engaging.

References

1. TopCoat — Fuka Koshiba: Official Profile and Filmography
   Official Profile
2. Biteki — Fuka Koshiba's Skincare Interview (2026)
   Skincare Interview
3. bis — Fuka Koshiba on Beauty, Diet, Exercise and Skincare (2023)
   Beauty and Lifestyle Interview
4. sweet — Fuka Koshiba on Approaching Her Thirties, Food, Hobbies and Rest (2025)
   Wellness and Lifestyle Interview
5. U-WATCH — Fuka Koshiba on Chimney Town Poupelle: The Clock Tower of Promise (2026)
   Journaling and Career Interview
6. LANDOER — Fuka Koshiba: Four DOER's Questions (2024)
   Sleep and Physical Care Interview
7. Fujinkoron — Fuka Koshiba on Figure Skating and Her Mother's Advice (2021)
   Early Life and Family Interview
8. ORICON NEWS — Fuka Koshiba Introduces Her Younger Sister (2026)
   Family and Eyelash Salon Story

Note: This article is based on publicly available information and interviews with Fuka Koshiba. Some of the routines described reflect her habits at the time of the original interviews.