A silent swordswoman that lives to serve. Especially to her young master, Fuyuhiko Kuzuryu. However, Fuyuhiko has recently released her of her duties. Not sure what to do now, Peko began hanging around with her other classmates, who’ve encouraged her to indulge herself more often. This includes eating more, which Peko has taken a liking to. Likely thanks to Mahiru, often invites Peko over for high-calorie, home-cooked meals. She tends to get flustered when her weight is brought up.