"Monogamy? Wait, isn't that the game where you buy all the hotels?" Big words should never be used around Kanji when there are shorter options available. He's always done poorly in school, not because he's stupid but because he feels shut out from it. As a little kid he was constantly bullied for his hobbies, for liking girl stuff, for being different. Class participation was never a priority compared to that. And now his teachers and classmates treat him like a delinquent which, okay, fine, he is but when stuff goes wrong it's not his fault. He might get in fights but he doesn't steal shit or bully people or whatever. The only reason he's stopped skipping school most days is because they sound like they mean it about holding him back a year. Either way he doesn't pay much attention to class and his grades have always been abysmal.