Yui Kobayashi
Also known as: Kobayashi Yui - Yuipon (ゆいぽん) - yousti - ユースティー - 小林由依 
Yui Kobayashi alias list
小林由依
ユースティー
Kobayashi Yui
yousti
Yuipon (ゆいぽん)
Yui Kobayashi Biography
Personal
Age: 26 years old
Born: Saturday 23rd of October 1999
Years active: 2015-present (started around 15 years old; 11 years active)
Nationality: (Japanese)
Ethnicity: Asian
Professions: Gravure Idol, Model, Musician, Musician: J-pop Idol, Musician: Singer
Body
Hair color: Brown
Eye color: Brown
Height: 5'3" (or 160 cm) (Petite)
Body type: Slim
Extra
Instagram follower count: 188k (as of June 2026)
About Yui Kobayashi
Yui Kobayashi (小林由依) is a soloist (as yousti; ユースティー), and a former founding member of Keyakizaka46 and Sakurazaka46.
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