Ruri Miyamoto

Age: 16
Height: 140
Birthday: December 24

Ruri is Kosaki's best friend, and is one of the few people who knew about her feelings for Raku. She constantly tries to help Kosaki admit her feelings for Raku often giving her a push from behind to take the next step forward.

In chapter 223, Ruri confesses to Shuu after realizing how amazing he was.