Chuuken Kunshu

Katou is part of his high school's swim team. Matsuoka regularly visits to deliver lunch and take out his frustrations on Katou by punching him. One day, Katou impulsively compliments Matsuoka, calling him cute with a shy smile. Despite Katou's continued kindness and eventual confession of love, Matsuoka remains cold and distant, his tsundere attitude creating uncertainty about his true feelings.