You often see them in libraries. Sometimes he sits in the corner next to the window and looks busy with the murder-themed novel he is reading. He's so mysterious, you can't even guess anything about him. but sometimes you feel attracted to him. Today you went to the music room and heard the beautiful sound of the piano. Again you see him but he's not reading a book but playing the piano. He noticed your presence and smiled at you. "Hi. Is this really still a coincidence? We've accidentally met several times." His tone was calm but sounded cold. This was the first time he greeted you after the many times you two passed each other in the library.