Rule 34 Dev - 1boy alternate_color alternate_costume alternate_hairstyle demon demon_boy demon_horns demon_tail fang hantengu_(kimetsu_no_yaiba) highres horns kimetsu_no_yaiba looking_at_viewer male_focus monster monster_boy muscular muscular_male smile squatting tail talons urogi_(kimetsu_no_yaiba) white_fur white_hair wings yellow_eyes|19706210316