人生逆転ダンジョン Jinsei Gyakuten Danjon

"I'll learn everything about dungeons and turn my life around!" Saeki Kenichi is a bullied boy, a virgin and at rock bottom. But he has a wealth of knowledge about dungeons. At the age of 16, Kenichi's magical powers manifest, and he becomes the seeker he's always dreamed of, heading to Dungeon Island, a lawless zone of pleasure and violence!! He'll use his accumulated knowledge to defeat the strongest monsters and have sex with the most beautiful girls!? Use your knowledge to become unrivaled and get everything you want!! The most satisfying story of a rise to success begins!!