2boys, 2girls, black_hair, blush, brown_hair, chainsaw_man, collarbone, denji_(chainsaw_man), gakuran, gurukousu, hair_over_one_eye, hand_on_own_face, limited_palette, looking_at_another, looking_to_the_side, medium_hair, multiple_boys, multiple_girls, one-piece_swimsuit, pull_cord, school_swimsuit, school_uniform, shirt, short_hair, swim_cap, swimsuit, topless_male, undressing, unworn_clothes, window, yellow_shirt, yoshida_hirofumi