Rule 34 Dev - 1boy artist_request blindfold blush bondage bound breasts breasts_out butterfly_hair_ornament english_text female gag gagged greyscale hair_ornament huge_breasts improvised_gag japanese_clothes kimetsu_no_yaiba kochou_shinobu large_breasts monochrome nipple_stimulation nipple_tweak nipples rope solo_focus straight|12516132680