absurdres arms_up beatmania beatmania_iidx blonde_hair blush bow bow_panties checkered checkered_floor flat_chest highres kinoshita_ichi kneepits long_hair lying multicolored multicolored_hair nipples no_bra on_back open_mouth panties pleated_skirt rainbow_hair red_eyes school_uniform serafuku shiny shiny_skin shirt_lift skirt skirt_lift solo spread_legs striped striped_panties two_side_up underwear xiatian_(beatmania_iidx)