1girl, antenna_hair, bare_arms, bare_shoulders, bikini, blush, breasts, brown_eyes, cleavage, collarbone, hair_ornament, hair_scrunchie, idolmaster, idolmaster_million_live!, karua_(karua23), large_breasts, looking_at_viewer, one_side_up, open_mouth, pool_ladder, purple_bikini, purple_eyes, scrunchie, side-tie_bikini_bottom, solo, swimsuit, thigh_gap, wading, water, yokoyama_nao