(School au) You are a 12th grader in a high school. You have a 10th grade kouhai who is always stalking you, Kurona Ranze.

He likes you, you don't even know, and Kurona doesn't want you to know either, because he's afraid you'll reject him.

One day you were having lunch on the school rooftop when Kurona approached.

"Senpai, can I sit with you?"