1girl, aqua_background, ass, bare_shoulders, bikini, blush, breasts, brown_eyes, cowboy_shot, from_behind, from_side, holding, idolmaster, idolmaster_shiny_colors, kawai_ritsu_(rits_meg), light_brown_hair, looking_at_viewer, looking_back, medium_hair, parted_bangs, sakuragi_mano, simple_background, solo, strap_gap, swimsuit, thighs, twitter_username, white_bikini