Yui Kobayashi

Yui Kobayashi
小林 由依
Background information
Also known asYousti
Born (1999-10-23) October 23, 1999
Gunma Prefecture, Japan[1]
OriginSaitama Prefecture, Japan
GenresJ-pop
Occupations
  • Singer
  • model
Years active2015–present
LabelsSony Music Records
Formerly ofSakurazaka46

Yui Kobayashi (Japanese: 小林 由依, Hepburn: Kobayashi Yui; born 23 October 1999), also known as Yousti, is a Japanese singer, model, and former member of the idol group Sakurazaka46. She is represented by Sony Music Records and is an exclusive model with a fashion magazine with.[2]

Career

Music

On August 21, 2015, Kobayashi along with 22 other members was announced for the newly created idol group, Toriizaka46 (now Sakurazaka46).[3] Kobayashi made her musical debut with Keyakizaka46's first single, Silent Majority.[4] In October of the same year, Kobayashi made her runway debut at the GirlsAward 2016 Autumn/Winter fashion show.[5]

As of 2019, Kobayashi has made an appearance in all Keyakizaka46 singles. She formed a duo named "Yui-chans" (ゆいちゃんず, Yuichanzu) with Yui Imaizumi, first appearing in Silent Majority with the song "Shibugakawa".[4] With Imaizumi's graduation in 2018, Kobayashi and Mizuho Habu formed another duo named "Senko Shimai" (線香姉妹), appearing in Ambivalent with "302-Goshitsu".[6] She held performance center roles typically held by Yurina Hirate when Hirate was unavailable, including the 60th Japan Record Awards and the 69th NHK Kōhaku Uta Gassen.[7][8]

On November 29, 2023, Kobayashi announced that she would be leaving Sakurazaka46 after the graduation concert on January 31–February 1, 2024.[9][10]

In May 2025, it was announced that Kobayashi would make her debut as a solo singer under the name Yousti. The stage name is a combination of her name and "ostrich", as she wished that her music could be a temporary "escape from reality" for those facing hardships (based on the common misconception that ostriches bury their heads in sand to avoid danger).[11] Her official fandom name is "Aisti", a combination of "love" (愛, ai), the English superlative degree suffix "st", and the English "I".[12] Her first self-titled EP would be released on August 27.[11]

Other ventures

Kobayashi has been an exclusive model in fashion magazine with since July 27, 2018.[2] Additionally, on 13 March 2019, she released a photo-book titled Kanjō no Kōzu (感情の構図), published by Kadokawa.[13]

Kobayashi's first independent acting role was in the 2020 live-action adaptation of Wasteful Days of High School Girls by TV Asahi. She played the role of Lily Someya, a multiracial transfer student; Kobayashi dyed her hair blonde for the role.[14][15] She will appear in Sakura, an upcoming movie to be released on 13 November 2020.[16]

Discography

Year Single Song Notes
2016 "Silent Majority"[4] "Silent Majority" (サイレントマジョリティー)
"Te o Tsunaide Kaerōka" (手を繋いで帰ろうか)
"Shibuyagawa" (渋谷川) As "Yuichanzu" with Yui Imaizumi
"Noriokureta Bus" (乗り遅れたバス) With Yui Imaizumi, Yurina Hirate, Miyu Suzumoto, and Rika Watanabe
"Kimi ga Inai" (キミガイナイ)
"Sekai ni wa Ai Shika Nai"[17] "Sekai ni wa Ai Shika Nai" (世界には愛しかない)
"Kataru Nara Mirai o..." (語るなら未来を…)
"Bob Dylan wa Kaesanai" (ボブディランは返さない) As "Yuichanzu" with Yui Imaizumi
"Futari Saison"[18] "Futari Saison" (二人セゾン)
"Otona wa Shinjite Kurenai" (大人は信じてくれない)
"Seifuku to Taiyō" (制服と太陽)
"Yuuhi 1/3" (夕陽1/3) With Yui Imaizumi, Yurina Hirate, and Neru Nagahama
2017 "Fukyōwaon"[19] "Fukyōwaon" (不協和音)
"W-KEYAKIZAKA no Uta" (W-KEYAKIZAKAの詩)
"Tuning" As "Yuichanzu" with Yui Imaizumi
"Eccentric" (エキセントリック)
"Kaze ni Fukarete mo"[20] "Kaze ni Fukarete mo" (風に吹かれても)
"Hiraishin" (避雷針)
2018 "Glass wo Ware!"[21] "Glass wo Ware!" (ガラスを割れ!)
"Mou Mori e Kaerou ka?" (もう森へ帰ろうか?)
"Zenmai Shikake no Yume" (ゼンマイ仕掛けの夢) As "Yuichanzu" with Yui Imaizumi
"Ambivalent"[6] "Ambivalent" (アンビバレント)
"Student Dance"
"I'm out"
"302-Goshitsu" (302号室) As "Senko Shimai" with Mizuho Habu
2019 "Kuroi Hitsuji"[22] "Kuroi Hitsuji" (黒い羊)
"Nobody"

Filmography

Film

Year Title Role Notes Ref.
2020 Sakura Kaoru [23]

TV series

Year Title Role Network Notes Ref.
2020 Wasteful Days of High School Girls Lily Someya TV Asahi

References

  1. ^ Keyakitte, Kakenai?. Episode 253. October 12, 2020. TV Tokyo.
  2. ^ a b "欅坂46"5人目"のモデル誕生 小林由依「with」専属入りで憧れランキング上位メンバー揃う" (in Japanese). modelpress. 19 July 2018. Retrieved 25 July 2019.
  3. ^ "「鳥居坂46」改め「欅坂46」誕生、1期生22名が決定". natalie (in Japanese). Archived from the original on 2018-11-29. Retrieved 13 February 2019.
  4. ^ a b c "サイレントマジョリティー". 欅坂46公式サイト (in Japanese). Archived from the original on 2019-02-13. Retrieved 13 February 2019.
  5. ^ "欅坂46小林由依、緊張のランウェイデビューで魅せた！ポージングに胸キュン＜GirlsAward 2016 A／W＞" (in Japanese). modelpress. 8 October 2016. Retrieved 25 July 2019.
  6. ^ a b "アンビバレント". 欅坂46公式サイト. Archived from the original on 2018-08-02. Retrieved 13 February 2019.
  7. ^ "【紅白】欅坂４６・小林由依が代役センター、ウッチャン「かっこよかったよ！」" (in Japanese). Hochi Shimbun. スポーツ報知. 1 Jan 2019. Retrieved 25 July 2019.
  8. ^ "欅坂46『レコ大』センター代役は小林由依 紅白リハでも担当". Oricon News. 30 Dec 2018. Retrieved 25 July 2019.
  9. ^ "櫻坂46公式サイト". 櫻坂46公式サイト (in Japanese). Retrieved 2024-04-07.
  10. ^ "【ライブレポート】櫻坂46一期生・小林由依卒業コンサートが大盛況！「8年半、私にとっての青春でした！」（THE FIRST TIMES）". Yahoo!ニュース (in Japanese). Retrieved 2024-04-07.
  11. ^ a b "元櫻坂46 小林由依、youstiとして1stミニアルバムリリース ソロ名義はダチョウと名前を掛け合わせた造語". Real Sound｜リアルサウンド (in Japanese). 2025-05-12. Retrieved 2025-05-27.
  12. ^ @yui_and_staff (May 27, 2025). youstiのファンネームを募集いたします！！ (Tweet) – via Twitter.
  13. ^ "欅坂46小林由依の1st写真集「感情の構図」ホテルの一室で捉えた表紙公開" (in Japanese). natalie. 15 Feb 2019. Retrieved 25 July 2019.
  14. ^ "欅坂46・小林由依、『女子高生の無駄づかい』出演決定 小悪魔系百合ガールに" (in Japanese). Crank-In. 30 January 2020. Retrieved 6 August 2020.
  15. ^ "欅坂46小林由依、金髪姿に反響「破壊力半端ない」「似合ってる」" (in Japanese). Modelpress. 30 January 2020. Retrieved 6 August 2020.
  16. ^ "小林由依が小松菜奈に想いを伝える『さくら』予告編公開 主題歌は東京事変が担当" (in Japanese). Yahoo! Japan. Real Sound. 6 August 2020. Retrieved 6 August 2020.
  17. ^ "『世界には愛しかない』". 欅坂46公式サイト. Archived from the original on 2019-02-13. Retrieved 17 February 2019.
  18. ^ "『二人セゾン』". 欅坂46公式サイト. Archived from the original on 2019-02-13. Retrieved 13 February 2019.
  19. ^ "『不協和音』". 欅坂46公式サイト. Archived from the original on 2018-08-29. Retrieved 17 February 2019.
  20. ^ "『風に吹かれても』". 欅坂46公式サイト. Archived from the original on 2018-07-02. Retrieved 17 February 2019.
  21. ^ "『ガラスを割れ!』". 欅坂46公式サイト. Archived from the original on 2018-07-22. Retrieved 13 February 2019.
  22. ^ "黒い羊". 欅坂46公式サイト. Archived from the original on 2019-02-03. Retrieved 13 February 2019.
  23. ^ "北村匠海×小松菜奈×吉沢亮「さくら」に寺島しのぶ、永瀬正敏、欅坂46・小林由依らが出演". eiga.com. Retrieved June 4, 2020.
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