Vampire hunter Nive Maris had rained Holy Fire down upon Rentt, the Undead adventurer, to prove he was a Vampire. But her plan only proved that he wasn’t a Vampire at all! When Lorraine suggested that Rentt's divinity may have been the reason the Holy Fire didn’t work, they decided to travel to his hometown of Hathara to visit the shrine where he obtained his divinity. Rentt and Lorraine plan to leave Maalt for a couple weeks, but first they need to create wands and equipment for their disciple, Alize, before they depart. And in order to avoid trouble with people like Nive, Rentt needs to get his double registration at the guild officially approved by negotiating with the Guildmaster, Wolf Hermann. But as the man who oversees countless ruffians, Wolf is a force to be reckoned with! An Undead with a dream, eternally striving toward the rank of Mithril-class! All this and much more in the fifth volume of Rentt's undead adventures!

When Rentt Faina crosses paths with Nive Maris, he finds himself victim to a rain of Holy Fire! But rather than prove he's a vampire, it disproves it! Lorraine believes Rentt's divinity may have protected against the Holy Fire, and together they decide to make for Hathara, where Rentt obtained his divinity. Before Rentt and Lorraine can depart Maalt, they first need to create wands and equipment for their disciple, Alize. To avoid trouble with others like Nive, Rentt has to negotiate with the Guildmaster, Wolf Hermann, to have his double registration officially approved. But as Wolf oversees countless ruffians, this'll be no easy task! An undead with a dream, eternally striving for the rank of Mithril-class!

It's been ten years since Rentt Faina, a down-on-his luck Bronze-class adventurer, set his eyes on becoming Mithril-class. Unfortunately, Rentt finds himself helpless when confronted by a legendary Dragon in the Labyrinth of the Moon's Reflection... and is summarily eaten. But Rentt has miraculously reawakened... as a Skeleton?!

After Rentt senses something wrong with his familiar, Edel, he and Lorraine leave Hathara and return to the city of Maalt. There they find the city on fire and crawling with thralls. Rentt finds Edel safe beneath the orphanage and learns through him that a single vampire might be the cause of all the chaos. Just as Rentt goes out to help rid the city of the thralls, he runs into the last person he wants to see in this situation—Gold-class adventurer and vampire hunter Nive Maris!

Rentt, the undead adventurer, manages to survive the poisonous Tarasque Swamp and retrieve the Dragon Blood Blossom for the orphan Alize. Just as he’s about to return, a mysterious stranger approaches him and offers him a job on the behalf of his mistress. Rentt accepts the request, and at the behest of Sheila and the adventurer's guild, he agrees to meet with the elusive head of the Latuule family. However, there’s more to this family than meets the eye. Will Rentt get more than he bargained for with one of the oldest and most influential families in Maalt?

Rentt Faina has achieved Existential Evolution, evolving from a Skeleton into a Ghoul. His next objective: rising the ranks and becoming a Copper-class adventurer! But to do so, Rentt must face his next greatest challenge... A written test?! Using his years of wisdom and the help of two companions, Rentt tackles the challenge head-on. But the worst is yet to come as Rentt finds himself in yet another pickle as he tries to prove his innocence to none other than trusted guild member, Sheila, as she raises concerns over his potential involvement in a recent string of adventurer disappearances. On his journey, he accepts a new quest, leading him to a new area that pits him face-to-face with a mighty monster of the bog! Will Rentt make it out alive to prove his uninvolvment in the disappearances and retrieve a highly-valued medicinal herb? Or is this the second end to the fate of our hero as we know him?

With the help of Lorraine, Isaac, Laura, and the rest of his companions, Rentt defeats the vampire Shumini after he attacks Maalt. However, in order to take control of the new dungeon, Rentt has to turn Rina into a vampire and make her his familiar. Both Rentt and Rina have leveled up, so Isaac suggests they try out their newfound abilities. He also offers to teach them about a vampire’s most notable skill: Division. Not everything goes as expected though, because while they were supposed to transform into a bat, Rina transforms into a cat and Rentt into a...tree? Meanwhile, people are flocking to Maalt to study the newly formed dungeon. Not to be left out, Rentt and his companions set out on their next adventure to explore the dungeon’s secrets! Fighting powerful monsters, solving countless mysteries, and becoming stronger! The adventures of Rentt, the undead adventurer who aims to become a Mithril-class adventurer, continues in this thrilling ninth volume!