The Timeless Kingdom

Everything changed when Jack's brother and three of his friends disappeared five years ago without a trace. Jack hasn't stopped wondering where they could've gone or what happened to them. When he discovers a mysterious staircase in the woods where they vanished... He realizes he just might get his answers.
Sucked into a mysterious world that's nothing like his own, Jack must find out if his brother is still alive... and if so... where is he?
As Jack journeys through this new world, he encounters mythical creatures, killer monsters... and beautiful women and non-human females. And no one is shy. Can he keep his pants on long enough to find his brother and friends and get back home?

This is an action/adventure story with mature nsfw scenes with both human and non-human characters. Contains sex scenes with humans and non-humans. Slow burn and world-building.