Horiuchi Marina (堀内まり菜) is a Japanese singer, model and actress under the agency Amuse. She is a former member and the 3rd Student Council President of Sakura Gakuin and its sub-units Twinklestars, Kagaku Kyumei Kiko LOGICA?, sleepiece, Pastel Wind, and Minipati. She is also a former member of the idol group Maboroshi Love from 2014-2015.
- Name: Horiuchi Marina (堀内まり菜)
- Sub-group: Kagaku Kyumei Kiko Logica?
- Stage Name: MaRi7 (used when promoting as a member of Kagaku Kyumei Kiko LOGICA?)
- Birthday: April 29, 1998
- Birthplace: Tokyo, Japan
- Blood Type: B
- Height: 155cm
- Shoe Size: 23.5cm
- Hobbies: Piano, Dance, Watching animation, Tennis
- Skills: Singing, Blind touch, Sprinting
- Favorite Food: Madeleine Cake, Toast, Marshmallows and Umeboshi
- Wants to Visit: Narnia, New Zeland, and Paris
- Want to Try: Voice Acting, Narration