fukuma333, kashiwada-san, odajima-san, tabuchi-san, kao ni denai kashiwada-san to kao ni deru oota-kun, absurdres, commentary request, highres, translation request, 4girls, ball, beachball, bikini, black bikini, black eyes, black hair, blonde hair, blue bikini, blush, breasts, brown hair, closed eyes, facing viewer, frilled bikini, frills, holding, holding ball, holding beachball, looking at viewer, medium breasts, multiple girls, navel, oota's sister, open mouth, pink hair, ponytail, purple eyes, red nails, short hair, side-tie bikini bottom, side ponytail, smile, striped bikini, striped clothes, swimsuit, teeth, upper teeth only, yellow bikini