That was probably due to the fact that he was constantly powered up and running around, fighting youma and other baddies, and not giving himself any real chance to heal.
Whatever.
He was out on patrol again, padding along through the dark alleys of the least safe area in town on purpose. He was looking to fight something to get his mind off of the injury, which in turn would just make it worse and harder to ignore, but it hardly mattered to him. Instant relief was his game, and he rarely thought about the big picture.
As long as he found something to punch he would be fine.
Ephebe