Ore dake Haireru Kakushi Dungeon

The Hidden Dungeon Only I Can Enter follows Noir Stalgia, a young noble who sits at the bottom of the social hierarchy despite his status. Shunned and mistreated by the other nobles, he relies on a rare power: the ability to communicate with the Great Sage, an oracle who can answer absolutely anything. After failing to secure a job as a librarian, Noir decides to enter the Hero Academy, knowing he must become stronger before he can survive there. At the Great Sage's guidance, he explores a hidden dungeon deep in the mountains, where he meets Olivia Servant, a beautiful maiden trapped and enchained within the labyrinth. Olivia grants Noir a set of ridiculously powerful skills that give him virtually total control over reality, but every time he uses those powers, his life points decrease and put him at risk. To replenish his energy, he must give in to worldly pleasures such as kissing his childhood friend. Armed with his newfound abilities, Noir begins life as a student at the Hero Academy, where he meets new acquaintances and helps them through the dire situations ahead.