[Yes, Frau knows Toushirou, and he's going to unintentionally provide Hattie with a means of tormenting the shinigami.]

Frostbitty? Yeah, I know him. He's helped me out a few times.

[And not with little things either. When Ella comes back over asks about tea, Frau just shrugs. None of it will come close to Lab's so he's not picky.]

I'm up for whatever.