MTL - The Apocalypse’s Great Merchant - Chapter 504 Kill in

A 29 year old civil employment exam student wakes up in a blank white room and meets a baby angel. This baby angel informs him that he died in his sleep due to heart disease like his father and grandfather. Remembering his mom and their last conversation he says that he will take on a series of life and death tests that the baby angel offers him. From this point on he must put his life on the line and fight in the stage called ‘Arena’. And Every time he clears a test he will gain abilities and weapons to increase his strength. All to clear the tests and get his life back. This is his story of his fights in the ‘Arena’.

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates

One moment, Lucas closed his eyes to sleep. The next, he opened them to find himself not in his bedroom, but in a courtroom.Even more startling, he was in a different body.Lucas was confused, but there was no time to dwell on it.Why?Because....“Your Honour, please sentence him to death!”the prosecutor demanded, looking directly at Lucas, who was seated on the judge's bench.'It seems I have become a judge.' Lucas realized.