- Birth Name: Otani Marina (大谷満理奈)
- Nicknames: Mariina (マリーナ), Tenrai-chan (天来ちゃん)
- Birthdate: February 14, 2004
- Birthplace: Yamaguchi, Japan
- Blood Type: A
- Height: 156cm
- Bands / Groups:
STU48 Song Participation
|Kaze wo Matsu||Shukkou|
|Genten|| 21st Century Born Members|
|Daisuki na Hito||Daisuki na Hito|
|Which is which?||STUDIO|
|Mubou na Yume wa Sameru Koto ga Nai||Mubou na Yume wa Sameru Koto ga Nai|
- Currently a first generation member of STU48.
- Attended Actors School Hiroshima in 2012.
- Prior to STU48, she was a member of the idol unit MAX♡GIRLS from 2016 to 2017.