1girl bangs bed bed_sheet black_hair black_legwear blush breasts censored dog_tags eyebrows_visible_through_hair hera_(hara0742) highres idolmaster idolmaster_shiny_colors long_hair loose_necktie missionary necktie nipples penis pillow pleated_skirt ponytail school_uniform sex shirase_sakuya shirt skirt skirt_lift sweat tearing_up tears unbuttoned unbuttoned_shirt white_shirt yellow_eyes