Other names:
Boku to Kimi tode Niji ni Naru; One one school days; Sen ve Gökkuşağı; You and I become a Rainbow; Я, ты и радуга; أنت و القوس قزح; 僕と君とで 虹になる; 妳我的彩虹青春; 架起你我的彩虹; 나와 너둘이 무지개가 되다
From Chibi Manga: Because she loved the word "wisdom", Rui hated the words "waste" and "fuzzy". One day, a guy named Shou appeared on her life. And thank to that encounter, Rui will suddenly change... And that's the beginning of a "rainbow school daze" between that super dry girl and that careless guy.
