Your Otherworldly Harem

This game is a short otherworldly adventure visual novel game.
Story is the player travel through time and space to an otherworldly world, build the harem, then adventure.
The main story is about the origin of the story of killing ghosts in the anime world. Because much anime are talking about ghosts, in the killing of ghosts, but no description of where the ghosts are from, how to birth, how to destroy.
This short story is mainly the use of religious explanation, to explain to people where the ghosts in the anime are from, and how to extinguish.
The protagonist will travel through time and space to the world of anime where ghosts are everywhere, meet his female companions, and then step by step to understand this world.
In short, save the world while having sex with your girls.