[Oh, good, he's stopped being loud and obnoxious. This is a step in the right direction.]

Not many, there is not much I could do to change the past or change what had happened. If nothing else, I could hope I could have kept myself and Zabuza-san from that battle, though that is hardly a viable option. [Really, as much as he believes his death was pretty much in vain, there's not much he could've done to prevent it when he truly thinks about it.]