- Name: Otani Yuki (大谷悠妃)
- Nickname: Yuuyu (ゆうゆ)
- Birthdate: July 29, 2004
- Birthplace: Aichi, Japan
- Blood Type: A
- Height: 151cm
- Bands / Groups:
SKE48 Song Participation
|Ikinari Punch Line||Rei no Potato Chips||Kenkyuusei & Draft 3rd Generation|
|Frustration||Se~no de Iouze!||Coming Flavor|
|Souyuutoko Aru yo ne?||Kimi no Inai Sekai||Coming Flavor|
|Koi no Konkyo||Highway Girls|
|Koiochi Flag||Koiochi Flag|
|Oto no Wareta Chime||Coming Flavor|
|Ano Koro no Kimi wo Mitsuketa||Sekai no Superhero|
|Kokoro ni Flower||Janai Romantic|
- Originally a candidate for the 3rd AKB48 Group Draft, she was drafted by SKE48 Team S in the second round and remained in Kenkyuusei until she was promoted to Team S on September 16, 2018.
- Her first choice as a draft member was SKE48.
- She can match anyone, but she can be indecisive.
- Her hobbies include watching YouTube.
- Her special talent is hula hooping.
- She admires Matsui Jurina.