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Hello! Project Wiki

Sayashi Riho (鞘師里保) is a Japanese dancer and actress. She is a former idol under Hello! Project as a 9th generation member of Morning Musume and the SATOYAMA movement duo Peaberry. She was the most popular member out of Morning Musume's 2011 additions. Starting with "Only you", her second single as a member, she was pushed into becoming one of the group's central figures as a main vocalist and dancer, which led to her being named the group's "absolute ace" (絶対的エース; zettaiteki ace) by media.[1][2][3]

Sayashi graduated from Morning Musume at the end of 2015 and took a break from Hello! Project activities to study language and dance abroad.[4] On December 7, 2018, it was announced that her contract with UP-FRONT PROMOTION expired at the end of November 2018 and she had subsequently graduated from Hello! Project.[5]

Despite her departure, she made her return to entertainment activities on March 30, 2019 as a guest in Hello! Project's annual Hina Fes concert.[6] In late June 2019, she began performing as a support dancer for the kawaii metal band BABYMETAL.[7][8]


Sayashi Riho, September 2020

Sayashi Riho, December 2015

Sayashi Riho, August 2015

Sayashi Riho, April 2015

Sayashi Riho, December 2014

Sayashi Riho, October 2014

Sayashi Riho, April 2014

Sayashi Riho, January 2014

Sayashi Riho, September 2013

Sayashi Riho, August 2013

Sayashi Riho,April 2013

Sayashi Riho, January 2013

Sayashi Riho, October 2012

Sayashi Riho, September 2012

Sayashi Riho, July 2012

Sayashi Riho, April 2012

Sayashi Riho, December 2011

Sayashi Riho, October 2011

Sayashi Riho, September 2011

Sayashi Riho, June 2011

Sayashi Riho, March 2011

Sayashi Riho, January 2011

Early Life[]

Sayashi Riho was born on May 28, 1998 in Higashihiroshima, Hiroshima, Japan.

In 2004, Sayashi was enrolled in Actor's School Hiroshima (ASH),[9] a school whose studies concentrates more on singing, dancing and acting lessons to prepare their students for an future actor career. She performed in several concerts organized by ASH as a 12th generation student and had a mentionable fanbase prior to joining Morning Musume.[10]

It was published in the July 2007 issue of Nakayoshi magazine that Sayashi entered an audition in Osaka to try and become a fashion model.


Sayashi was one of the five winners of the Jc&Jk Joyuu Audition and received the chance to perform in Morning Musume's Fashionable stage play from June 11 to June 27.[11]

Later in the year, Sayashi entered the Morning Musume 9ki Audition and reached the final round. On December 21, she received the news that she had won the audition.[12]


On January 2, during the Hello! Project 2011 WINTER ~Kangei Shinsen Matsuri~ A gana Live concert at Nakano Sun Plaza, Sayashi was announced as a 9th generation member of Morning Musume along with Fukumura Mizuki, Ikuta Erina and Suzuki Kanon.[13]

On March 27, it was announced Sayashi would be replacing Mano Erina in the radio show MANO-DELI, which would be renamed RIHO-DELI.

In April, Sayashi debuted in the Morning Musume single "Maji Desu ka Ska!".

Sayashi was unable to perform in the Hello! Project 2011 SUMMER concert tour following the first shows in Nagoya on July 16. It was later announced on July 29, that she was diagnosed with ischium nerve pain on her right side and would be out of events for at least six weeks.[14]

On August 27, Sayashi recovered from her injury and returned to work in time to celebrate the release of her first solo photobook Sayashi Riho.[15]

Sayashi starred in a stage play titled Reborn ~Inochi no Audition~ along with Niigaki Risa, Tanaka Reina, the other 9th generation members, and Kudo Haruka.


On January 13, the Morning Musume 9th generation and 10th generation members began a web talk show exclusive to fanclub members, titled Maji DE Pyoko Pyoko!.[16] They also began a radio show on April 7, titled Morning Musume no Morning Jogakuin ~Houkago Meeting~, on Radio Nippon.[17]

On April 18, it was announced that Morning Musume's Tanaka Reina and the 9th and 10th generation members would star in a new stage play titled Stacies Shoujo Saisatsu Kageki. The musical ran from June 6 to June 10.

On May 13, information was released about an event featuring Morning Musume's 9th and 10th generation and S/mileage's 2nd generation, titled Mosuma FC Event ~Gachi☆Kira~. It took place throughout June and the beginning of July.

On July 20, it was announced that Sayashi and Wada Ayaka were choosen to form the SATOYAMA movement duo Peaberry.[18] The unit released an indies single, titled "Cabbage Hakusho / Forest Time" with Harvest, on November 7.


On May 16, the Morning Musume 9th generation and 10th generation members' fanclub-exclusive web talk show Maji DE Pyoko Pyoko! ended with a total of 70 episodes.[19]

On May 28, Sayashi held a birthday fanclub event, titled Sayashi Riho Birthday Event ~Sayashi no Koto, Itsu Iwau no? Ima Desho!!~ with Fukumura Mizuki, Ishida Ayumi, and Oda Sakura as guests.


On May 28, Sayashi celebrated her 16th birthday at a fanclub event titled Morning Musume '14 ~Sayashi Riho Birthday Event 2014~. The event featured one performance in Tokyo.

On November 22, Sayashi appeared as a guest on the radio show Young Town Doyoubi. It was announced during the show that Sayashi would become a regular, replacing Michishige Sayumi after she graduated.[20] Her first appearance as a regular was on November 29.

Sayashi's radio show RIHO-DELI concluded on December 28.


On May 28, Sayashi celebrated her 17th birthday at a special fanclub event called Morning Musume '15 Sayashi Riho Birthday Event.

On October 29, Sayashi announced her graduation from Morning Musume on December 31 at the Hello! Project COUNTDOWN PARTY 2015 ~GOOD BYE & HELLO!~.[4] She would remain in Hello! Project, but would study English and dance abroad for some time. Six days after the initial announcement, Sayashi also recorded a video in English for her overseas fans with the help of Mitsui Aika on UP-FRONT LINK.[21]

Statement by Sayashi Riho[4]
Thank you for your continued support towards Morning Musume。'15.

I have to make an announcement to all of you.

I, Riho Sayashi, Will graduate from Morning Musume。 on December 31st of this year.

Since kindergarten, I wanted to take part in the group Morning Musume。 and I became a member when I was 12 years old. During 5 years, I started with Tsunku♂-san and continued until now with the support of many staff, with all the Morning Musume。 and Hello! Project members, and more than anything, with the fans.

However, I thought during this year many times about continuing like this in my future life. As a human alone, I started to think if there were things that I have to experience in order to live strongly?

I have discussed many times with the people of the company, and I decided to graduate after I checked the growth of the 12th generation kohai ("kohai" means "juniors" here) this year. Concerning the day of my graduation, I had the privilege on deciding the graduation on the last day of the "Morning Musume。'15" on December 31st during the Countdown Live. Concerning the Morning Musume。's tour, the last performances will be on December 7th and 8th at the Budokan.

I am really sorry for the abrupt news. I think this is quite a surprise. But until now, inside of me, it has worried me. And it has led me to this decision.

From now, I think I want to study abroad and learn more English and dance. Then with those experiences I will mature much more, and I will try my best to come back as soon as possible.

There are 2 months left until then, but until this moment with all the members I will do everything we have to do for "Morning Musume。'15".

Until December 31st, I want to run through everything with all my power so please continue to support me!

Riho Sayashi

Statement from UP-FRONT PROMOTION[4]
Thank you for your continued support towards Morning Musume。'15.

Today, Riho Sayashi has announced she will graduate from Morning Musume。'15 on December 31st in her blog post.

Riho became a 9th generation member and made her debut with "Majidesuka Suka" in 2011 and continued her carrier until now. She said she wants to devote herself to her progress in dancing, and she talked about this matter many times. With her consent, we came to this conclusion.

Riho will graduate from Morning Musume。but she will be a Hello! Project's member after the graduation. Before flying with her own wings, we will watch her with this new challenge.

Until her Morning Musume。'15's graduation as a member, she will continue to perform much more during the current tour and during the other activities.

Please continue to support Morning Musume。'15 and assist Riho Sayashi in the future.


From October 1 to December 18, Sayashi briefly hosted the first radio show on the Hello! Project Mobile service, titled Sayashi no Heya.[22][23]

On December 21, Sayashi held a solo live, titled Morning Musume '15 Sayashi Riho Solo Special Live, featuring two shows at Differ Ariake.[24] Fans could win an invitation to the special live by entering a lottery when they purchased the "Tsumetai Kaze to Kataomoi / ENDLESS SKY / One and Only" box set from forTUNE music.[25][26]

On December 26 and 27, she held her first solo bus tour, titled Morning Days Happy Holiday Sayashi Riho Fanclub Tour in Boso.[27][28]

On December 31, Sayashi graduated from Morning Musume at the end of the first part of the Hello! Project COUNTDOWN PARTY 2015 ~GOOD BYE & HELLO!~ at Nakano Sun Plaza.[29] Afterwards, she decided to study language and dance abroad, mainly in New York City.[5]


On December 7, an update was posted to the Hello! Project official website, announcing that Sayashi had graduated at the end of November when her exclusive contract with UP-FRONT PROMOTION came to an end. Sayashi explained that she had decided to leave the agency to head towards a new goal. At that moment, she still had many things she wanted to take in, but looked forward to seeing everyone once she had become her "new self". She thanked fans for their continuous support in the past three years since she graduated from Morning Musume and wants to continue fulfilling her dreams of singing, dancing, and acting.[5]

Thank you very much for all your support towards Sayashi Riho and Hello! Project.

Sayashi Riho was part of our office, but as of the end of November, her exclusive management contract with our firm has come to an end.
At the same time, she will also be graduating from Hello! Project.

Sayashi joined Morning Musume。 in 2011 as a 9th generation member and was active until 2015.
Even after her graduation from Morning Musume。, we watched over her in her efforts,
But she wanted to bring things to an end and to take another step forward, for the sake of pushing forward towards her new goals.
We accepted her strong determination and have arrived at this conclusion.

Sayashi may be graduating from Hello! Project,
But we will support her in the future as well, hoping that she grows and develops to new heights.

Thank you so very much for supporting Sayashi Riho.
We hope that you will continue to watch over her warmly as she takes on her new challenges.

7 December 2018

Statement from Sayashi Riho[5][30]
To all of the fans who have constantly supported me as well as to everyone whom I’ve worked with

How are all of you doing?
It’s been a while. This is Sayashi Riho.
I’m doing well!

In order to push forward towards my new goals,
I, Sayashi Riho, want to bring things to an end within myself, and this is due to my own selfish desires,
But the decision has been made, and I will be leaving UP-FRONT PROMOTION, who have been taking care of me since my debut.

This is the result of long consideration and discussions,
But the announcement has ended up being quite sudden. Please forgive me for that.

Ever since I joined Morning Musume。 when I was 12,
It was a headlong charge, and I got to have many wonderful experiences.
Those experiences made me want to see even more aspects of the world, and even after graduating from Morning Musume。,
I’ve been studying abroad, based in New York, learning language and dancing.

And now, this is what I think: I would like to absorb even more things.

So, I’ll become even more of a new me
And move on forward, in order to reunite with all of you once again.

The fans who support me, regardless of the fact that about 3 years have passed since I graduated
Have, truthfully, been a source of daily emotional support for me. Thank you so very much!

I still want to sing! I still want to dance! I still want to act!
If you could find it in you, please warmly watch over me, a person who harbors so many dreams.

To all of you who have supported me up until now as a member of Morning Musume。 and Hello!Project,
There may be discussions in the future, but I’m very much obliged to you.
From the bottom of my heart, I’m grateful.

From now on, I will continue to count on you.
Thank you very much!

7 December 2018
Sayashi Riho


Sayashi returned from a 3-year and 3-month hiatus to perform as a guest in the Hello! Project 20th Anniversary!! Premium of Hello! Project 20th Anniversary!! Hello! Project Hina Fes 2019 on March 30.[6]

On June 28 at Yokohama Arena, BABYMETAL held their first concert of the year, BABYMETAL AWAKENS -THE SUN ALSO RISES-, where a support dancer took the place left by third member Mizuno Yui (YUIMETAL), who quit due to health reasons in October 2018. Although the support dancer was not introduced during the concert, news sites and audience members on social media identified her as Sayashi.[7][31][32] Sponichi Annex reported that one of three support dancers would be chosen for each of BABYMETAL's performances, and Sayashi was chosen for that day.[8] Before they debuted, Sayashi was rivals with the band's main vocalist Nakamoto Suzuka (SU-METAL) when they attended Actor's School Hiroshima together.[33][34] She later accompanied the band to their following gigs in England at the Glastonbury Festival on June 30[35][36] and at the O2 Academy Brixton in London on July 2.[37]

While discussing Sayashi's recent activity in the July 6 broadcast of the radio show Young Town Doyoubi, Iikubo Haruna revealed that Sayashi has been working freelance since she left UP-FRONT PROMOTION.[38]


On April 30, she opened up an Instagram account.[39]

On July 1, it was announced that she would have a regular column on Wani Books starting on July 10.[40]

On July 15, it was announced that she was cast as the lead role in the musical Kuro Sekai, the newest installment of Suemitsu Kenichi's series of vampire-themed musicals, TRUMP. The musical followed the character Lily after the events of LILIUM -Lilium Shoujo Junketsu Kageki-, and Sayashi reprised her role as the main protagonist for Kuro Sekai.[41][42] The musical ran from September 20 to October 4 in Tokyo, and from October 14 to October 20 in Osaka.[43]

On September 3, it was announced that after working freelance since 2019, Sayashi has now signed with the agency Japan Music Entertainment.[44]

On September 8, it was announced that she was one of ten actresses cast to appear in an episode of a drama series set to air on TV Tokyo.[45]

On October 2, she was cast in the musical 35MM: A MUSICAL EXHIBITION, which ran from October 31 to November 1 at Akasaka ACT Theater in Tokyo.[46]

On October 21, she opened up her official website.[47]

On October 24, she opened up her official fanclub, which is titled "Sayashii Hito-tachi" (さやしい人たち).[48]

On December 5 she started her new Radio show "Sayashi Riho to 〇〇 to"on MBS Radio.[49]


On January 11, Sayashi's first self-written Song Ano Hi Yakusoku Shita Kara (あの日約束したから) was streamed on Terminal. [50] This marks her debut as a soloist, and her debut as a lyricist.

On May 28, which is the date of her 23rd birthday, Sayashi wanted to hold her first one-man live solo concert since leaving Hello! Project.[51] However, it was postponed to August 9th due to the declaration of the state of emergency. [52] RIHO SAYASHI 1st LIVE 2021 DAYBREAK took place on August 9. During the Concert she announced her RIHO SAYASHI 1st LIVE TOUR 2022 Reflection Solo tour.

On July 13, it was announced that Sayashi would release her first solo mini album, "DAYBREAK", under her own label "Savo-r" on August 4th.[53][54]

On November 27 her 2nd EP Reflection was announced. [55]


A new Dance show featuring Riho will start in February on Dance Channel, called Sayashi Riho no One Step[56] [57]

Riho participated at THE DANCE DAY Kanto Tournament in March [58]

Starting on March 25, Riho will be the TV host for NHK High School Course - English Communication I" (Level 1) on NHK-E [59]

On March 28, Riho announced on her Instagram that she will play recurring role on the Ore no Kawaii wa Mousugu Shohikigen!? TV Drama. [60] [61]

On May 28, her 24th Birthday A Fanclub Event called "RIHO SAYASHI BIRTHDAY FANMEETING 2022" will be held at Shinagawa Intercity Hall. [62]

From August 6, till August 26 she will be playing the role of Chloe in the Stageplay Surumegaoka produced by Parco Produce. [63] [64]

On April 23, she announced her 2nd Live Tour 2022 [65][66][67]

Personal Life[]

She has a younger sister and a younger brother. Her uncle is a Hiroshima Carp's former baseball player. Sayashi's ancestors were artisans in Hyogo.

She has a pet fish named Kuroe and two hamsters named Omochi 1 and Omochi 2.

When she auditioned for Morning Musume, Sayashi was a 6th grade elementary school student. As of April 2017, she has presumably graduated from high school.

During her time in Morning Musume, she most notably got along with fellow 9th generation member Suzuki Kanon.

Here is a list of nicknames that was used to refer to Sayashi Riho:

  • Yasshii (やっしー): An official nickname given to her by Tsunku when she joined Morning Musume.[68][69]
  • Rihoriho (りほりほ): Her second official nickname as a member of Morning Musume, which was given to her by Michishige Sayumi.[69][70]
  • Sayashii (さやっしー): Her third official nickname as a member of Morning Musume.[69]


Main article: Sayashi Riho/Pocket Morning Weekly Q&A
  • Charm Point: Eyes
  • Weak Point: Really nervous doing presentations
  • Strong Point: Handles animals well
  • Favorite Animal: Tiger
  • Special Skill: Penmanship, massage, calligraphy, kendama
  • Hobbies: Listening to music, dancing, sleeping, drawing, looking around zakkayasan (boutiques selling various goods)
  • Favorite Sports: Baseball, dodgeball
  • Favorite Foods: Peaches, Chinese noodles, chicken wings, cereals, sushi, oysters
  • Least Favorite Foods: Carrots, shrimp, eggs
  • Favorite Colors: Pink, white, black, green and blue
  • Favorite Movie: Finding Nemo
  • Quality you have that she won't lose to anyone: Her love for her family.
  • Motto: "If you can sing you can rock the stage", "Shuwa Shuwa PON!", "Ichigo ichie" (一期一会; one in a lifetime encounter)
  • Catchphrase: "Hyahhhooi♪" (ひゃっっほーい♪( ´θ`)ノ~)
  • The best thing about your hometown: The oysters are delicious in the winter.
  • Looks up to: Takahashi Ai, Suzuki Airi
  • Favorite Morning Musume Singles: "Kimagure Princess", "Maji Desu ka Ska!"
  • Other Favorite Song: "Gangnam Style" by Psy, "Zurui Onna" by Sharam Q,


Main article: Sayashi Riho/Discography


Mini Albums

Solo Songs[]

Solo Music Videos[]

  • [2021.08.10] LAZER
  • [2022.01.11] Winding Road

Solo DVDs/Blu-rays[]

Greetings Sayashi Riho DVD Cover.jpgRIHODVDCover.jpgRihodvd.jpg139034386.jpgYxub6UO.jpg9257b31dad89c50cd6bdf6c826d8ce77c21eb9d4.jpgSayashiRiho-GradMemorialDVD.jpgMM15SayashiRihoSoloSpecialLive-DVDcover.jpgM119amg-img450x600-14642687089tww0p26799.jpgKokka24jp-img422x600-14670320597mqyw013118.jpg


Main article: Sayashi Riho/Publications

Solo Photobooks[]

  1. [2011.08.27] Sayashi Riho
  2. [2012.08.27] Un Deux Trois
  3. [2013.11.25] Taiyou
  4. [2015.03.25] Juurokusai
  5. [2015.12.25] Morning Musume Sayashi Riho Zenshuu 2011-2015

Other Books[]

  1. [2016.03.26] 17sai no Ketsudan (autobiography)

1 cc464b57-9432-4027-ad58-9133c0c38025.jpgReflection photoalbum cover.jpg

  1. [2021.12.xx] RIHO SAYASHI 1st LIVE 2021 DAYBREAK (Live Photobook)
  2. [2022.03.31] RIHO SAYASHI 1st LIVE TOUR 2022 Reflection (Live Photobook)


Riho Calendar FC 2021.jpg Riho Calendar Regular 2021.jpg Riho Calendar FC 2022.jpg Riho Calendar Regular 2022.jpg

  • [2021.04.xx] Sayashi Riho 2021nen School Calendar (鞘師里保 2021年スクールカレンダー)
  • [2021.12.xx] Sayashi Riho 2022nen Calendar (鞘師里保 2022年カレンダー)

Lyrics Credits[]




  • [2011] Sharehouse (シェアハウス)

TV Programs[]

TV Dramas[]

New drama.jpg

  • [2012] Suugaku♥Joshi Gakuen (数学♥女子学園)
  • [2020] Ano ko no Yume wo Mitan Desu [Episode 10] (あのコの夢を見たんです)[73]
  • [2021] Shukatsusei nikki [Episode 3] (就活生日記)[74]
  • [2021] Anonymous [Episode 5] (アノニマス) [75]
  • [2021] Chef wa Meitantei [Episode 7] (シェフは名探偵) [76]
  • [2021] Junkyouju Takatsuki Akira no Suisatsu [Episode 5] (准教授・高槻彰良の推察) [77]
  • [2021] Momo-Ume [Episode 6,8,20] (モモウメ)[78]
  • [2022] Ore no Kawaii wa Mousugu Shohikigen!? (regular) [79]

Documentary film[]

Top mbl.jpg

  1. [2021.11.27] Middle of the Night


FashionableReborn ~Inochi no Audition~Stacies Shoujo Saisatsu KagekiGogakuyuuLilium Shoujo Junketsu KagekiTRIANGLEKuro Sekai35MM: A MUSICAL EXHIBITION



  • [2011–2014] RIHO-DELI
  • [2012–2013] Morning Musume 9ki・10ki Member WEB Talk Maji DE Pyoko Pyoko! (モーニング娘。9・10期メンバー WEBトーク 本気DE飛跳!) (fanclub exclusive)
  • [2012–2015] Morning Musume no Morning Jogakuin ~Houkago Meeting~ (モーニング娘。のモーニング女学院~放課後ミーティング~)
  • [2014–2015] Young Town Doyoubi (ヤングタウン土曜日)
  • [2015] Sayashi no Heya (さやしの部屋) (Hello! Project Mobile exclusive)
  • [2020-2021] Sayashi Riho to 〇〇 to (鞘師里保と○○と)
  • [2021-present] Sayashi no hitori-goto (さやしのひとりごと) Sayashii Hito-tachi Fanclub exclusive)


  • She was voted 7th favorite member in the 2011 "Hello! Project Music Awards" event.[80]
  • She was ranked 6th in the Middle School Group of the Beautiful Idol General Election 2012.[81]
  • She was voted 4th favorite member in the 2012 "Hello! Project Music Awards" event.[82]
  • She ranked at #40 in Anikan R Yanyan magazine's May 2013 "Singing idol you like the most".
  • She ranked 6th in mixi's June 2013 Hello! Project Popularity Ranking.
  • She was voted 3rd favorite member in the 2013 "Hello! Project Music Awards" event.[83]


  • Her surname Sayashi (鞘師) is incredibly rare, only 50 individuals in Japan share the same surname.
  • She, along with Suzuki Kanon are the first members of Morning Musume that were born after the group's formation in September 1997.
  • During her Morning Musume audition she wore number 501.
  • Since her debut, Sayashi has had a solo line in every single A-side except for "Oh my wish!", "Mikaeri Bijin", and "One and Only".
  • She has a scar on her chin, which she got by cutting it on a juice can when she was little.
  • Her mother speaks in Kansai dialect and shares the same birthday as Sato Masaki.
  • She is not good at waking up in the morning.
  • When asked the question "If you could become another Hello! Project member, who would you be?", Takahashi Ai said she would like to be Sayashi because she wants to be called cute no matter what she does, and Niigaki Risa said that she would like to be Sayashi (or Suzuki Kanon) because she wants to feel what it is like to be young again.
  • She can bend both her thumbs all the way back.
  • Outside of Morning Musume, she said she would be a nail artist.
  • She shared the position of the lead vocalist together with Tanaka Reina, until the latter graduated.
  • She stated that her rival is herself.
  • Sayashi expressed her admiration for ANGERME member Murota Mizuki on her radio show.
  • Tsunku commented on Sayashi: "She has become much more feminine and courageous lately. There hasn't been anyone like her in the group before. Maybe not even in showbiz. She keeps improving silently. It'll be interesting to see how she will be when she's 20."[84]
  • She is known to have a "parts fetish", namely for Fukumura Mizuki's arms, and said that it makes her feel like a perverted old man.
  • She has said that she is very shy when meeting new people and making new friends.
  • She is the first Hello! Project member from Actors School Hiroshima. She was succeeded by fellow alumni Dambara Ruru and Hiromoto Ruli.
  • Michishige Sayumi had expressed her love for Sayashi and kissed her during her graduation concert.
  • She is a huge fan of Takahashi Ai and has expressed her love, admiration, and support for her at many different events.
  • Sayashi is a fan of model and TV personality Rola.[85][86]
  • Her graduation marked the 9th time a member of Hello! Project graduated in a Hello! Project concert rather than a group concert tour. It was also the first time a member graduated during a countdown live.
  • Actress Matsuoka Mayu is a huge fan of Sayashi, and she cried when they met in person on a variety TV show.
  • She is one of three Morning Musume members to have the blood type AB, the others being Kago Ai and Kamei Eri.
  • She shares the same birthday as ANGERME member Sasaki Rikako and former Coconuts Musume member Mika.
  • While a Morning Musume member, Sayashi drew a character on her goods named Sayamaru (さやまる), which is described as being the size of a ping-pong ball, weighing like a marble, and liking cider and sleep. Although it became Sayashi's character, Sayamaru was actually created by Fukumura Mizuki.[87]


  1. "モーニング娘。新時代のエース“鞘師里保”の生き様――― 17歳で卒業を決断したアイドル人生「突き抜けたいです」" (in Japanese). Billboard JAPAN. 2015-10-30.
  2. "モー娘激震!卒業発表したエース鞘師里保の“本音”" (in Japanese). Tokyo Sports. 2015-10-31.
  3. "12期メンバーの加入、そしてエース・鞘師里保が卒業…モーニング娘。’15は“さゆロス”を乗り越えられたのか(9)" (in Japanese). music.jp News. 2017-10-13.
  4. 4.0 4.1 4.2 4.3 "[EN] Concerning Riho Sayashi." UP-FRONT LINK. 2015-10-29.
  5. 5.0 5.1 5.2 5.3 5.4 "鞘師里保に関するお知らせ" (in Japanese). Hello! Project. 2018-12-07.
  6. 6.0 6.1 "元モー娘。鞘師里保 3年ぶりステージ復帰!ハロプロフェスにゲスト出演" (in Japaense). Sponichi Annex. 2019-01-23.
  7. 7.0 7.1 "ベビメタ新体制で初単独公演 元モー娘鞘師も登場" (in Japanese). Nikkan Sports. 2019-06-28.
  8. 8.0 8.1 "BABYMETAL 2人体制初の単独公演 元モー娘。鞘師里保がサポートダンサーで登場!" (in Japanese). Sponichi Annex. 2019-06-29.
  9. http://www.tss-tv.co.jp/actors/index.html
  10. "スクール紹介 - 卒業生". Actor's School Hiroshima Official Website.
  11. "http://natalie.mu/music/news/32873 モーニング娘。がファッションショー風に主演舞台をアピール" (in Japanese). natalie. 2010-06-06.
  12. Morning Musume '15 Sayashi Riho Solo Special Live MC. 2015-12-21.
  13. "モーニング娘。第9期メンバー決定!!" (in Japanese). Hello! Project. 2011-01-02.
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  15. "モー娘・鞘師里保 坐骨神経痛から復帰「うれしい」" (in Japanese). Sponichi Annex. 2011-08-27.
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