A prophecy from the Celestial Knight Hine foretells that Lastiara will die at the end of the Festival of the Blessed Birth. With the festival starting in two days, Kanami is desperate to find a way to save her! While Kanami might have grown stronger since coming to this world, is he strong enough to thwart fate itself?!
Kanami and Lastiara proceed through the Dungeon, but it’s not exactly an easy trip. Their way is blocked by the magma flowing through one of the floors, and when they retreat they run into the celestial knight Lagune! Is Kanami any match for her and her powerful magic sword?
Once they finally escape the Dungeon, Kanami decides to relax a little and take part in the Festival of the Blessed Birth. There, Lastiara tells him her true identity and why she has such amazing magical powers.
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 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?
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?
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?
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!