MTL - Please Spare Me a Tail - v2 Chapter 94

In the year 2030 a world where magic reigns supreme, Ellard a being formally known as the “Mighty Overlord” who was humanity’s strongest.Had conquered many battlefields during his youth making his names known far and wide.However, during his last battle he was caught up in a plot made by the goddess of death who feared his existence due to his constant support to the goddess of vitality and was sent to his death for eternal sleep.However, the goddess of vitality was able to get to his soul while he was crossing the path between life and death, she granted him a second chance of life...Now one thousand years later he was reborn inside the body of a nine-year-old boy who had suffered a great misfortune after his father was assassinated and his mother had lost most of her noble influence, which resulted in their family suffering ridicule.

Ever since she transmigrated, she was blessed with an inbuilt anti-poison detector.

One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.

Xiao Ran transmigrated to a fantasy world. As a dungeon guard in the Celestial Dungeon, with a special floor called the Purgatory meant for powerful demons and martial arts experts, he faced a huge challenge from the start. The Eldest Princess acquired a forbidden martial arts technique and was banished to the Purgatory. However, no one was powerful enough to restrain her. All the dungeon guards were defeated. Xiao Ran stepped up and declared, “Your Highness, it’s better for you to behave yourself on my territory” and effortlessly subdued the Eldest Princess.

He progressed from imprisoning the Eldest Princess to delivering the Great Xia Kingdom from the evil clutches of various demons and evil martial arts experts.

…

Xiao Ran was the mastermind behind the scenes.