Sasuke almost smiles at the admittance. There's a twitch at his mouth and he even looks away, just in case, because God forbid someone know that he can find something humorous in a conversation.

But the fact that there were people who said they wanted to help is something he latches on to instead and he swallows a little roughly. He doesn't want to get his hopes up that maybe Shiro really did prove him wrong, but it's hard to believe that it would last.

"Mm. Until they get bored."

The pinnacle of optimism, this one. He bites his tongue for a moment, before glancing over to Shiro, trying so damn hard to not look as curious as he feels.

"Why do you volunteer?"