This looks very promising. I'm sucker for stories where you travel to different world as it allows you to learn things about the world itself without it feeling shoehorned. Plus I always enjoy what if scenarios.
This feels a bit like Far Beyond the World but so far it feels like this has better pacing and less mewling from the protagonist. Yes, he is frightened and upset but the story is still carried forward and he is not stuck into single room for months, so me likes.
I'm just hoping it doesn't devolve into a situation where the whole plot is centered around the protagonist as some sort of mythic savior. I always enjoy more the "unfortunate sod getting pushed into events beyond his control for laughs of some trickster figure" stories - and the beginning with the old witch felt like this might be one.
I'm looking forward to more updates. It will be interesting to see him adjust to being a lion and explore the town and the world... hopefully there will be more updates!