Rule 34 Dev - 2boys black_hair black_thong blush bridle christmas christmas_outfit collar demon_slayer gay hand_on_chest kimetsu_no_yaiba kissing leash male male_only muscular neck_ribbon open_clothes open_shirt pec_grab reindeer_antlers reindeer_costume reins saba_(9o28sr) sabito santa_costume santa_hat thong tomioka_giyuu yaoi|5747602184