narutaki shin, hirasawa ui, kotobuki tsumugi, nakano azusa, k-on!, 00s, 3girls, :d, :o, = =, bent over, black hair, blonde hair, blush, breasts, brown eyes, chibi, cleavage, competition school swimsuit, day, flat chest, hair ribbon, hug, hug from behind, long hair, multiple girls, one-piece swimsuit, open mouth, outdoors, ponytail, ribbon, school swimsuit, short hair, smile, splashing, standing, swimsuit, twintails, very long hair