Nozomanu Fushi no Boukensha  

The Unwanted Undead Adventurer, The Unwanted Immortal Adventurer, 望まぬ不死の冒険者, 望まぬ不死の冒険者, เส้นทางพลิกผันชองราชันอมตะ, 非自願的不死冒險者

A twenty-five-year-old adventurer named Rentt Faina has spent ten years battling monsters but lacks talent in the job. He spends his days hunting slimes and goblins for minimal pay. Little does he know that his life is about to take a dramatic turn when he stumbles upon an unexplored path in the Labyrinth of the Moons Reflection. At the end of this trail awaits him a legendary dragon, which swallows him whole in no time! After waking up briefly, Rentt finds himself not entirely dead but also not alive, reduced to nothing more than a pile of bones. Armed with his trusty sword, tool belt, and new ghastly appearance, he embarks on a quest as a reborn Skeleton to achieve Existential Evolution, hoping one day to regain a human form and return to civilization. Will Rentt succeed or will the labyrinth consume him forever?

Nozomanu Fushi no Boukensha has been published digitally in English as The Unwanted Undead Adventurer by J-Novel Club since May 2, 2018.