[Kratos's leg hurts, and he's feeling irritable; but being able to get up and do this is calming, sort-of. Enough that he's cognizant that he had rather blatantly flouted at least one order, in the past ten minutes. In light of that, he probably owes Yuan some kind of answer.

[Still, he doesn't look up while he replies, making his slow way along the floor.]

It is within my power to do; therefore, it will be done.

[It sounds a bit like a recitation. It is.]