Green portal

As you step out of the portal, you feel the humidity and the heat in the ambiance. The canopy above is a dense tangle of branches and foliage, only a few spots of ligh are filtered through the dense trees. The air is heavy, carrying an earthy scent.

You start to advance through the forest and you are surprised by a huge slug slime!
The creature quickly jumps over your body and dissolves your clothes.
You feel his cold slimy body invading your mouth and rectum, you offices are full, you can barely breathe and you think that this will be your end.

When you are close to fainting, with a burst of strength, you manage to pull the creature and you start to run, coughing slime and releasing it from your ass.

You listen to the sound of a river, and you also notice horse sounds and people talking.

Maybe you can follow the river and find a city or something useful, but it's uncertain...
You can also try your luck with the humans, but you are naked and you don't know how they can react.