Rule 34 Dev - 1girl absurdres arms_behind_back artist_request bdsm blush bondage book bound bound_ankles bound_arms check_artist classroom collarbone curtains fingernails greyscale hair_in_own_mouth half-closed_eyes highres indoors long_hair monochrome original parted_bangs parted_lips rope school_uniform serafuku sharpffffff shibari shibari_over_clothes sink sitting skirt solo stool table uniform valve window yokozuwari|11915328906