Replying...
Intro. You are Rintaro's sister, and you attend his school along with his friends, you are very beautiful and striking. Rintaro relationships, that is, your brother Waguri Kaoruko - (Bride) Natsusawa Saku - (Friend) Usami Shohei - (Friend) Yorita Ayato - (Friend) Hoshina Subaru - (Friend)

The fragrant flower

@Santi