UNWANTED UNDEAD ADVENTURER LIGHT NOVEL (2025)

Rentt Faina, a twenty-five-year-old adventurer, has been hacking away at monsters for a decade. However, without much talent for the job, Rentt finds himself stuck hunting slimes and goblins for meager amounts of coin every day. Little does he know, all this is about to change when he comes across a seemingly undiscovered path in the Water Moon Dungeon. What awaits him at the end of the path, however, is neither treasure nor riches, but a legendary dragon that wastes no time swallowing him whole! Waking up a short time later, Rentt finds himself not quite dead, but not very alive either - he is nothing more than a pile of bones! Armed with nothing but his trusty sword, tool belt, and ghoulish new looks, Rentt sets off on his quest as a newly reborn skeleton to achieve Existential Evolution, hoping to one day return to civilization with a more human form!

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. Will Rentt make it out alive to prove his non-involvement in the disappearances and retrieve a highly-valued medicinal herb?

"Rentt Faina has successfully overcome the menacing tarasque standing between him and the Dragon Blood Blossoms he seeks. But then, deep in the Tarasque Swamp, a well-dressed man appears before Rentt, offering him a quest on behalf of the revered Latuule family. Rentt visits the Latuules, only to find himself trapped in a maze! As he looks for a way to reach the Latuule manor, Rentt stumbles across an opening with beautiful roses and... a table with teacups? Will Rennt make it out undead enough to achieve his objective of becoming a Mithril-class adventurer?"

Rentt Faina, undead adventurer, reaches the next stage of Existential Evolution and becomes a lesser vampire! Now short on funds, Rentt sets off to retrieve items necessary to craft equipment for his disciple, Alize. He heads to the New Moon Dungeon with his faithful mouse familiar Edel in tow. Rentt cuts a path through lizardmen and forest wolves, and even defeats the terra drake in the boss chamber. But as he presses on, he stumbles upon a legendary monster-an earth dragon!

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. Rentt must 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!

Our undead adventurer's journey continues! Rentt Faina, the undead adventurer, arrives at his hometown of Hathara. He's joined by Lorraine, a scholar and sorcerer. The villagers are all excited to meet Lorraine, and to celebrate Rentt's return, they throw the two a welcome banquet. During the banquet, Rentt slips out. Lorraine finds him at a graveyard, where he reveals the incident that motivated him to become a Mithril-class adventurer. He also uncovers decades-old secrets that involve not just his hometown, but also the Faina family themselves!

Now that they can travel by teleportation circle, Rentt and Lorraine visit Vistelya, the capital of the Kingdom of Yaaran. Lorraine uses magic to hide their identities, and Rentt checks out the guild headquarters. There, the duo gets involved with Augurey, an adventurer from Maalt. When Augurey clues in to their identities, he agrees to a magical contract to seal his lips. However, on the way to the temple of Hozei, the group comes across monsters attacking a carriage with a surprising occupant! As if that isn't enough, the God of Contracts herself shows up to oversee the whole affair.

When Rentt senses something wrong with his familiar, Edel, he and Lorraine leave Hathara and return to the city of Maalt. They find the city in flames, swarming with thralls. Rentt finds Edel safe beneath the orphanage. Through his familiar, our hero learns that a single vampire may be the cause of all the chaos. Matters are complicated when Rentt runs into Gold-class adventurer and vampire hunter, Nive Maris - who still suspects Rentt may be a vampire!

Rentt and Lorraine are tasked with picking up the grand guildmaster of Yaaran and escorting them to Maalt. The duo travels to Yaaran's capital, Vistelya, only to find the grand guildmaster is out and won't be back for a few days.

After meeting Ferrici, Rentt and his party manage to wrap up their guild requests without a hitch. But they can't let their guards down just yet, for the mysterious third assassin is still out there, waiting to strike! Worse yet, there's more to the situation than meets the eye. After a certain surprise, Rentt finds himself embroiled in the criminal underworld, where his every decision affects not just himself, but also Lorraine, the Grand Guildmaster of Yaaran, and even the kingdom's royal family!

Now that the tumultous events in the royal capital are over with, Rentt and Lorraine can finally complete Wolf's request, and the duo prepare to return to Maalt with Grand Guildmaster Jean Seebeck in tow. Meanwhile, Rina has been training with Alize under Isaac's guidance. Despite her newfound vampiric abilities, she remains an Iron-class adventurer; surrounded by numerous talented individuals, she struggles with self-confidence. Her prescription? Adventure! As Rentt journeys to Maalt, apprehensive of the trials awaiting him, his junior in all things adventuring and vampiric faces her own trials.

Rentt Faina accepts a request to defend a small village from a band of marauding skeletons. What should've been a routine job turns dangerous when Rentt tracks down their source-and comes face to face with a powerful skeleton knight! But what has caused these monsters to evolve? The answer may lie with the strange small cup Rentt found at the battle site, but there's barely any time to investigate: there's always work to do for an adventurer! Clope the blacksmith has decided to face the ghosts of his past and enter a blacksmithing contest, and he wants Rentt to guard him on the journey. To top it all off, Rentt has to prepare for the Silver-class Ascension Exam.