He really couldn't back down after seeing the way Tonbokiri's face lit up. It was actually pretty sweet... Darn it...! He really was a softy sword on the inside wasn't he?

"Fill up their water, you muck out the stalls, and then we sweep. Got it. That really shouldn't take too much time."

Or maybe it wouldn't if Tonbokiri didn't have Izuminokami on his side to help him in this. But still he did make a promise so he wouldn't halfass it at the very least.