Rule 34 Dev - 1boy abs armbands armlet bara biceps big_pecs bulge demon_slayer facial_mark fingerless_gloves fundoshi gold hair_down headband headgear headwear human human_only jewelry kimetsu_no_yaiba looking_at_viewer male male_chest male_focus male_only muscles muscular muscular_male nail_polish pecs pectorals red_eyes ring silver_hair sitting six_pack smile smiling smiling_at_viewer solo spread_legs suyohara sword testicles_in_underwear underwear underwear_only uzui_tengen veiny_muscles weapon white_background white_hair white_underwear|6106455704