2boys, abs, ark1478, arknights, bishounen, blue_hair, dark_blue_hair, defeat, demon_boy, demon_horns, doctor_(arknights), earrings, flamebringer_(arknights), horns, infection_monitor_(arknights), jewelry, katana, looking_at_viewer, male_focus, multiple_boys, nipples, orange_eyes, oripathy_lesion_(arknights), parted_lips, pectorals, pointy_ears, short_hair, simple_background, stepped_on, sword, toned, toned_male, weapon, yaoi