A world forever changed by the sudden emergence of dungeons now relies on skilled adventurers to brave them. Saeki, deemed powerless and useless, becomes an explorer for one reason: to fund his sister’s treatment for a rare illness. Unknown to all, he hides an incredible secret—in a past life, he was the legendary Forbidden Archmage. To save his sister and reclaim his destiny, he must level up from nothing to regain his former, overwhelming magic. This is the tale of how one man’s hidden past will shake the foundations of the world.
