It'll have to. I don't imagine a spirit could come here that'd be strong enough to change you permanently like that. And even if they did, I'd imagine the Witch has at least a rule or two in place that keeps them from totally disrupting all her work plans...

[ And Natsuru is Koriko's favourite model. She can't exactly go back to her usual work gig in a state like this. ]

We'll give it a day or so and if it hasn't worn off by then, we'll go and see the Witch together. How does that sound?