Rinne Miki is a normal first year's high school girl who loves fashion and is close with her friends.
But, she has a caring personality too, so though she has opposite-sex friends, that never became romantic, and she lived her life without romance.
But, on the day of the school festival, she meets Toma, a boy with a slightly mysterious atmosphere to him... though she's bewildered by how aggressively the younger boy approaches here, gradually, she starts to see him as...?

高校1年生の三木凜音はオシャレが大好きで友達想いな普通の女の子。
でも世話好きの性格もあって、異性とは友達にはなっても恋愛に至ることはなく、恋心とは無縁に生きてきた。
そんな彼女だが、文化祭の日にちょっと不思議な雰囲気の少年・冬馬と出会って…。
グイグイくる年下男子に戸惑いながらも、だんだんと凜音も冬馬のことが…？