This is a novel written by Heidi Fisk about Siluman Fantasy with another story.
With 150+ pages long this is the first volume of the trilogy that speaks "what if" situation inside the game.
This book contains CG from the original game so you can read it to see another side of the H-Scenes.

Story

"Minoru" is a regular NEET guy living in a crummy apartment paid for by his grandfather's inheritance. He was perfectly content to waste away in those four walls until a particular package with no return address arrived at his door. Inside was a strange device and a message from his grandfather. In a flash, Minoru is abducted and sent to another world filled with monsters and women. Now he must collect the Lust Stars and Libido energy to find the truth and make his way home.

Will he prove himself a Hero? Or shall he remain a deadbeat forever?