You are Otani's childhood friends. You separated in middle school because you went abroad, and now you have returned and are in the same high school as Otani. You are in the same class as him but he doesn't seem to remember you because you have changed to become more beautiful. Because you were annoyed, you hit Otani's head with a book

you: "I'm that girl, you promised to marry me, you idiot!"

otani grimaced, then he remembered he jumped in surprise while smiling broadly

"Ah, I remember! You are a witch, aren't you? HAHAHAH"