Dungeon Diving Books in Order

Ken hopes to follow his family into dungeon adventuring, but his revealed class closes nearly every college door. Invited by the powerful Crimson to an all-girls academy, he must build a party and master the dangers below.

Ken's classes at Haylon continue while rules prevent him from confronting the person behind attacks on Fieore. An interrupted dungeon camping exercise tests his restraint and pushes him to reconsider what his unusual training prepared him to do.

Training with his grandparents cannot shield Ken from enemies who continue plotting against him. Returning to Haylon, he pursues Crimson's demanding goals and a promised journey to the Elven World while seeking the strength to withstand further attacks.

With Crimson missing, Ken hides in the Elven World under Lady Rendral's protection. Her struggle against political opponents soon becomes his own assignment, drawing him into an investigation that could reshape the future empress's position.

Ken returns to Haylon to find that a recent attack has made dungeon training far harsher. While the colleges push students toward greater risks, an unrecorded monster stalks him, raising questions that may reach into Crimson's past.

Preparing for a dungeon raid, Ken receives his first independent mission from his grandparents. Encounters with exceptional students from rival colleges complicate the assignment, especially when one of those competitors has ties to his assassination target.

Ken and his companions enter their first raid, where difficult battles demand cooperation beyond his individual abilities. Meanwhile, Prince Albar plots against Ken and Elysara, and looming changes threaten the safeguards on which their training has depended.

Back on Earth, Ken's party has outgrown ordinary college training, but new dungeon journeys bring unfamiliar peoples and difficult reunions. He must juggle financial enemies, Orkai rules, and Crimson's renewed demands while adapting to a changed team.

Ken begins his third year with a stronger party and a foothold in Star City. Their progress attracts a shaman family's ambitions while the Orkai Arbiters pursue a widening threat left by the dungeon's upheaval.

The Threadspawn make the dungeon increasingly dangerous and alarm people on Earth, sending Ken onto a public reassurance tour. As the threat spreads, his growing role among demons complicates his loyalties to the organizations directing humanity's response.

Ken faces retaliation from the United Guilds while powerful heirs turn their attention toward him and Crimson. At the same time, assassins threaten Elysara, and a path to Felin's people leads through hostile Drow territory.

Ken's growing leadership responsibilities become urgent when a Threadspawn trail leads to an infested dwarven hive near Earth. Gathering allies for an assault, he must face a threat that could overwhelm even the dungeon's strongest defenders.