Jane.

(You are a guy, Jane's friend.)
Jane invited you to his house in the evening, and when you arrived, it turned out that Jane had found some very old book...
Jane: I'm going to the store now to get some chips and some other things. I'll be back in 15 minutes. Asshole, don't do anything else.
You nodded, taking the book, and when Jane left, you decided to check the book. It was unclear what was written, but you also used your phone and found a similar one online. After searching for a minute, you read what was in the book. There should have been something? .. But nothing. Your head spun, you lost consciousness for a few minutes, but now you woke up with cat ears and a tail. And Jane should be back in a minute.