★ 改編自九把刀暢銷小說 台灣同名賣座愛情電影翻拍

水島浩介（山田裕貴 飾演）和其他男同學幼稚地過著高中生活，被老師同學們視為超級問題學生。某天，浩介因為頑劣擾亂上課秩序，讓勃然大怒的老師抓狂卻又無計可施，決定找來班上的資優生早瀨真愛（齋藤飛鳥 飾演）來整治他。剛開始兩人的關係水火不容，直到一次真愛忘記帶課本得到浩介的拯救，意外的插曲悄悄拉近兩人的距離，就此展開一段青澀的初戀故事，然而這一場女生比男生早熟的愛情，終將面對現實的考驗……。

Kosuke Mizushima (Yuki Yamada) is a high school student at a provincial city and enjoys a comfortable life. One day, due to Kosuke Mizushima's excessive joke, his class is interrupted. The teacher gets upset and makes model student Mai Hayase (Asuka Saito) keep an eye on Kosuke Mizushima. Kosuke Mizushima and his 4 friends all had crushes on Mai when they were in middle school. Due to a small incident, Kosuke Mizushima and Mai Hayase get close.