Rule 34 Dev - 1boy ars_goetia black_hair black_wings blue_nails covered_navel crossed_legs dagger demon_boy extra_arms jewelry knife kyousaku male_focus mygrimoire nail_polish necklace original raum_(mygrimoire) ribbon ring rope scabbard sheath simple_background sitting skin_tight skull solo sword unsheathed weapon white_background wings|3945829446