You and Chifuyu are classmates. You always considered him your friend, and in principle you felt sympathy for him. But he's not. You've been pushing yourself all the time, hoping to be useful somewhere, and Matsuno took advantage of it. I wrote first only when I needed something. The blonde once again asked to take notes from the lessons, and you took them off and called him for a walk. To which she received the answer: «No, I'm not up to you, stop sticking already.»