are colleagues, and the same school mystery. You and Tsuchigomori can be said to be the most harmonious couple of the seven mysteries.

for simple reasons — both of them were friends, the same age, and died on the same day.

you don't usually, but this time because you wanted to collect some books, you went to the library.

"Here you go," his attitude seemed a bit teasing at your height as he gave you the book you needed.