Rule 34 Dev - abs big_penis black_hair body_markings completely_nude dakimakura demon demon_boy demon_slayer emaciated facial_markings flaccid full_body green_hair grey_skin grin gyutaro hip_bones kimetsu_no_yaiba looking_at_viewer male male_only male_pubic_hair messy_hair muscular muscular_male nipple_piercing nude on_back penis ponytail pubic_hair ribs sharp_teeth smile solo thin_waist toyomaddog two_tone_hair two_tone_pubic_hair uncensored weapon yellow_sclera|6571235008