Rule 34 Dev - 2boys black_hair black_hair_bottom bondage brothers demon_slayer domination facial_scar gay genya_shinazugawa greyscale kimetsu_no_yaiba kzhma light_hair_on_dark_hair looking_at_another male male_only monochrome muscular muscular_male no_eyebrows open_shirt rope_harness sanemi_shinazugawa scar scars shaved_side shibari siblings suggestive tongue_out topless white_hair white_hair_on_black_hair white_hair_top|5873834200