1girl, o, ahoge, asakura_toru, bare_legs, barefoot, beach, full_body, idolmaster, idolmaster_shiny_colors, looking_at_viewer, loose_necktie, necktie, night, night_sky, on_ground, plaid, plaid_skirt, sakatsuki_yakumo, school_uniform, sea_sparkle, sitting, skirt, sky, soles, solo, star_(sky), toes