[Kashuu makes a small sound, somewhat surprised, somewhat impressed. It goes over his head just a little, but he can understand the gist.]

No place has an entrance but no exit, yeah? [And then, a sloping shrug.]

I'm not really good at dealing with complicated stuff like this, but I really think he's trying to do us a favor, y'know? So... [A little huff of a sigh.] He can probably fix it, too.