2boys, anger vein, animal ears, bara, battle, biceps, black gloves, blonde hair, brown hair, bulletproof vest, cat ears, dagger, fingerless gloves, from behind, gloves, hands on another's head, holding, holding dagger, holding knife, holding weapon, knife, male focus, multiple boys, muscular, muscular male, scar, scar on arm, shirt, short hair, t-shirt, tail, weapon, yaoi