1girl, bikini, bikini_skirt, cowboy_shot, frilled_bikini, frills, grey_eyes, grey_hair, hat, idolmaster, idolmaster_cinderella_girls, kawaseki, looking_at_viewer, navel, open_mouth, otokura_yuuki, pink_bikini, short_hair, smile, solo, sun_hat, sunlight, swimsuit, thigh_gap