Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Volume 17 Chapter 30

The Great Norther Wall. The Dragon Knights. The Lords of the Winter Mountains. The Descendants of the Primordial Dragon. These are the various titles of the Grand Ducal Clan Ragnar, which boasted a rich, thousand year history. Theo Ragnar resolved himself to aiming for the throne of that very same clan. ‘These cursed chains weren’t something I could slip out of. They were meant to be broken with strength.’

A modern-day antihero, who was infamous for his devious acts, dies in an explosion meant to take down a powerful criminal syndicate. Waking up in a world of sword and sorcery, he finds himself possessing a fragile, powerless body with a strange “System” that seems broken. Initially thinking he's doomed, he learns that by pretending to be weak, he can manipulate others into revealing their secrets, granting him abilities they possess. As he rises in power, he discovers that the System was intentionally sabotaged—by none other than his own future self.

An obscure restaurant in an ordinary street? The cursed thing sealed in the steel city? Reverse the mysterious time-space history of confusion? …

From the moment he was able to see the “ID” and “Blood Bar”, Gu Mo thought that his way of opening was wrong. He was determined to return to the world of normal people and not be dragged down by his own imagination and hallucinations.

However, the painting style of the everyday world is still breaking down day by day, and the broken daily life is becoming more and more magnificent day by day, and he found that something was a little wrong.

- Description from novelbuddy

The mysterious master returned to the village, skilled in medicine and Martial Arts, using extraordinary methods to lead the villagers on a path to wealth.