1boy 2girls bangs beach bikini blush breasts brown_eyes brown_hair caburi cleft_of_venus closed_mouth commentary_request day hand_on_own_chest hand_up highres idolmaster idolmaster_cinderella_girls imai_kana light_smile medium_breasts multiple_girls navel nipples outdoors pussy red_bikini side-tie_bikini_bottom sidelocks solo_focus striped striped_bikini swimsuit thighs twintails untied untied_bikini