Rio Amakusa

Оригінальне ім’я: 天草理緒

Rio is a high school student who is [Ichika](https://anilist.co/character/141687/Arima-Ichika)'s best friend and is in the same class as her. She is a member of the tennis club and is also [Ryou](https://anilist.co/character/141688/Amakusa-Ryou)'s younger sister.