I suppose all my luck in life was used up on the day of the college entrance exam—solving the final calculus problem correctly and, by chance, sitting in the same exam room as you. Sunlight slipped through a gap in the curtain, casting a clear line that crossed your back and fell onto my arm.…

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…