The Eldritch Great One's Multiversal Playground

A human boy dies but instead of going to the afterlife his soul is sent into the world of Bloodborne as The Hunter. This human is able to defeat the Moon Presence and become the First full Great One to be once human. Our protagonist then leaves and finds himself in a world where the supernatural exists and...demon women in nice suits? Join GURPS The Great One as shenanigan's happen and he tries to cure his boredom occasionally. Yes this is basically some wish fulfillment and just for fun mainly, also some practice.