彼女は窓からやってくる。 異世界の終わりは、初恋の続き。

I have a problem with Hinami Asuka. Because I returned to the modern world from another realm, I’ve become an outcast at high school. And then, my girlfriend next door—Fumizuki Sakuya—comes into my room through the window. Sakuya is my classmate and was once a witch who fought against me as an enemy in another world. She still holds a grudge over losing to me and continues to antagonize me. My wish is to attain a peaceful everyday life. To achieve that, I must defeat her once more so that she won’t bother me again. I begin another battle with Sakuya—and in the process, I uncover her secrets and the true reason she came to see me. This is the story of how we, who had the worst possible first meeting in another world, come to experience the best of our youth.