1girl, 3boys, action, aiming, artist_name, back-to-back, battle, belt, bench, black_hair, blue_hair, buttons, cross, cross_necklace, dual_wielding, formal, gun, habit, hat, holding, holding_gun, holding_knife, holding_weapon, indoors, jacket, jewelry, knife, long_hair, mask, multiple_boys, necklace, nun, pants, purple_hair, red_eyes, short_hair, side_slit, suit, watermark, weapon, web_address, window