- Voice Actor (CV)
- Yumi Uchiyama
- Gender
- Female
- Age
- 16-18
- Birthday
- December 24
- Role
- Supporting
- Identity
- A student at Bonyari High School and active swim club member, serving as the closest and most trusted confidante of heroine Kosaki Onodera
Personality
Cool-headed
Sharply perceptive
Witty and sarcastic
Deeply loyal
Ruri Miyamoto is a Bonyari High School student who holds an irreplaceable place in Kosaki Onodera's life as her most dependable best friend. Blessed with an exceptionally sharp eye for detail, she saw through the tangled web of emotions among the main cast far earlier than anyone else. Behind her composed exterior and razor-sharp tongue — often directed at the antics of Marika — lies a heart that treasures friendship above all else. Working quietly behind the scenes, she orchestrates opportunities to bring Kosaki and Raku closer together, cementing her role as one of the story's most pivotal supporting figures.