[ Well, now he knows, Gojou just has no idea how she got that way. Not that he's going to question something like this - to him, it's simply another form of some sort of curse, taking advantage of yet another innocent person.

He hears the warning but doesn't quite respond in time - or does he? No, it's sort of a feint. He lets the kelpie get in close enough that he can grab onto it, slamming its head down onto his knee. It hits him now that he's actually put himself in danger by jumping in here, and he should keep track of himself as well as her. If he could get rid of at least one of these things, it'd be easier - he goes for his knife while he has the one in hand, trying to stab it through the throat. ]