Tsun De Re Oji to, Dekiai Dokyo Shitemitara. (Ketai Shosetsu Bunko Shi 8-3 No Ichigo) [Light Novel]

[Machine Translation] Sincerity is a junior in high school who lives alone. By mistake, she ends up sharing a room with the coolest guy in school, Arimura-kun. Moreover, he is a misogynist. Sincerity makes an effort to get along with Arimura by cooking for him. He gradually opens up to Sincerity and kisses her on the forehead, saying that she is "too open", and when a rival for her love appears, he becomes possessive! The gap between his usual cold but sweet behavior and his usual coldness will make your heart pound! The explosive and heartwarming cohabitation life begins.

1人暮らしをすることになった高2の真心は、手違いで学校一クールなイケメン・有村くんと一緒の部屋になってしまう。しかも、彼は超女嫌い。真心は、そんな有村くんと仲良くなるために手料理を作ったりして努力する。真心の健気さにだんだん心を開いた彼は、「隙ありすぎ」と言って額にキスをしてきたり、恋のライバルが現れてからは独占欲全開で!?普段は冷たいのに激甘な行動とのギャップにドキドキが止まらない!!爆キュンな同居生活開始。