2boys, alternate_universe, black_keys_(type-moon), center_opening, cross, cross_earrings, cross_necklace, dual_wielding, earrings, glowing, glowing_eyes, head_out_of_frame, holding, holding_sword, holding_weapon, jewelry, kanshou_&_bakuya_(fate), male_focus, multiple_boys, necklace, red_hair, sitting, sword, weapon, yellow_eyes