Rule 34 Dev - 1boy abs animal_mask ankle_bracelets balls_bulge balls_in_underwear bara black_fundoshi black_underwear blue_fan bulge demon_slayer fan flaccid flaccid_penis flip_flops fundoshi fundoshi_only hands_behind_head heavy_breathing human human_only inosuke_hashibira kimetsu_no_yaiba legs_apart legs_open legs_spread light-skinned_male light_skin lying lying_on_back male male_only mask masked masked_male muscles muscular muscular_male muscular_thighs nipples open_legs pecs pectorals sandals six_pack solo solo_male spread_legs steamy_breath toned toned_body toned_male uchiwa underwear underwear_only vimen|11129251840