2girls, ass, back, bikini, breasts, brown_eyes, brown_hair, denim, denim_shorts, eyewear_on_head, flat_chest, glasses, green_eyes, haruyuki_(gffewuoutgblubh), hat, idolmaster, idolmaster_cinderella_girls, long_hair, multiple_girls, navel, sakurai_momoka, short_hair, short_shorts, shorts, simple_background, small_breasts, stomach, sun_hat, sunglasses, swimsuit, tachibana_arisu, white_background