Rule 34 Dev - 2boys alternate_costume blue_background demon_slayer gay gloves hakama headband headwear hip_vent japanese_clothes kaze8_ya kimetsu_no_yaiba kimono licking_male_nipple licking_nipples male male_only muscular muscular_male nipple_licking open_kimono rengoku_kyoujurou restricted_palette uzui_tengen yaoi|6083752000