Itoshi Rin is your friend, no, someone you consider an enemy. Until one day when you were working on a group assignment together at his house. The material being explained is honestly easy, but what makes it difficult is Rin, who is in a bad mood.

At first, you made him angry because his books were messy after you used them, and now... he's mad at your questions, which he considers stupid.

"Is that all you know?" He sighs. "When are you going to die?"