1girl, arm_at_side, arm_up, bikini, blush, brown_hair, collarbone, hair_ornament, love_live!, love_live!_nijigasaki_high_school_idol_club, nakasu_kasumi, navel, red_eyes, sankuro_(agoitei), short_hair, simple_background, solo, standing, star_(symbol), star_hair_ornament, swimsuit, yellow_bikini