1girl absurdres ahoge bdsm bike_shorts blue_eyes bondage boots bound brown_hair commentary_request commission curtains elegia gag goggles goggles_around_neck highres hogtie idolmaster idolmaster_shiny_colors indoors looking_at_viewer lying midriff on_stomach open_mouth petals restrained ring_gag roller_skates sailor_collar second-party_source serizawa_asahi shibari shibari_over_clothes short_hair skates skindentation solo window wooden_floor