Kanami, having finally defeated Palinchron, wakes up on the other side of the Dungeon’s sixty-sixth layer. He meets the Quinquagesimal Guardian, Tity, and realizes he’s been asleep for an entire year. He begins to plan his escape with Liner, who ended up there with him. On their journey back up the Dungeon, they meet another Guardian, Nosfy, who seems to have been waiting for them. What actually happened in the past between Kanami and the Guardians? These two Guardians’ wishes remain unfulfilled, tying them to this reality. Misunderstandings abound as each new conversation hides more secrets, and the acceptance of fate leads to regrets. At the end of it all, just out of reach, a trial appears for one particular girl.

A thousand-year-old contract. A mission to inherit the power of the apostles. A continuous game of battles between heroes and monsters. In the Boundary War, everyone swings between “fate” and “birth,” and there is no longer anyone to stop Palinchron’s plan to fulfill his contract. However, having finally captured Palinchron on the battlefield, Kanami challenges his bitter enemy in order to stop the recurrence of what happened a thousand years ago. The Worldcrown Array is activated, purple amethyst magic fills the area, and once again the Trial of the Twentieth Floor begins! At the moment when the oath and destiny residing in his heart are fulfilled, the boy will be the one who discovers the deepest truth.

Following the intense events of the battle against Alty, “Siegfried Vizzita” is no more. And it’s not just Kanami’s house that lies in ruins. So too does his mind—and his memories of his comrades, now in the hour of their direst need. Palinchron used his mental magic to rewrite both Kanami’s and Maria’s memories to a narrative that suited his own agenda. They now think of him as the man who saved their lives. A whole new saga begins, this time in the nation of Laoravia, alongside the powerful dragonewt heroine, Snow Walker, sister of the much-lauded “strongest diver” Glenn. Palinchron’s first order of business? He makes Kanami the master of Epic Seeker, the guild that’s all about finding strapping heroes. Kanami wants for nothing in this new blissful existence, Dungeon diving with Snow and his “sister,” Maria... up until he encounters two girls who claim to be allies of his.

An ordinary kid by the name of Aikawa Kanami winds up in a fantasy world operated by RPG video game rules—but this isn’t good news. He awakes in the bowels of a gargantuan death trap called the Dungeon. Narrowly escaping thanks to his grit, cunning, and newfound arsenal of magic spells and skills, he wants nothing more than to get back home to Earth and the invalid sister who needs him. His only lead? It’s said that whoever makes it to the hundredth and final level can have any wish granted. In his desperation, Kanami cooks up the most efficient means of clearing the Dungeon and lies his way into a partnership of expediency with an aspiring swordfighter who’s rubbish with the blade but unbelievably skilled at magic. Kanami’s cool determination, however, is soon put to the test when he and his new comrade are faced with a surprise boss fight. How far will he go in order to emerge victorious? Find out in the first volume of this beloved, long-running series!

When Aikawa Kanami is suddenly transported to another dimension, he's thrust into a world of magic and monsters. In this strange land, adventurers band together to try and clear the Dungeon, a mysterious labyrinth with a hundred levels. Legend says that if you reach the hundredth level, any wish you have will be granted. All Kanami wants is to get back home to his ill little sister, but does a level 1 newb like him even stand a chance?

While wandering around town, Kanami bumps into Alty, one of the Dungeon's bosses! Alty corners Kanami, but instead of fighting, she offers to team-up with him! She'll help Kanami explore the Dungeon, but there is something she wants from him in return. Can Kanami keep up his end of the bargain? Will Alty?

Ever since Kanami arrived in this new magical world, his fate has been tied to Lastiara, a mysterious girl with strange powers. Lastiara is intrigued by Kanami and insists on joining him on his adventure. Kanami is wary of Lastiara and her meddling ways, but he needs all the help he can get if he's to clear the Dungeon and return home. With Lastiara and Maria by his side, Kanami starts making rapid progress through the Dungeon! But little does he know that his quick success may come at a cost...

When Kanami and Dia get ambushed by a high-level boss, it seems like the two adventurers are done for. It soon becomes apparent that if either of them are to survive this, it will come at a great price. Will Kanami and Dia ever be the same again?

When Kanami sees a black-haired, black-eyed girl named Maria at a slave market, she reminds him so much of his little sister he had to get her out of there. But his motives aren't totally altruistic since he wants to use her as a dungeon diving companion. Maria stubbornly refuses to see their relationship as anything but master and slave, but over time she gradually warms to Kanami. Will she use her unique skills to help him defeat the Dungeon?

In his quest to return to his own world, Kanami is determined to conquer the Dungeon and have his wish granted. To do so, he has teamed up with Dia, a swordfighter whose magic stats are off the charts. The two are a formidable team and quickly start clearing floors, but they run into trouble when their high kill count catches the eye of an over-powered enemy!