Martial King's Retired Life - Chapter 36Book 15:

I thought being laid off from my job was the greatest of my worries but I just had to wake up in a ship's cockpit after my space game crashed. Now I have no map, no friends and no money.But that's ok, I've started from the bottom before! With my starter ship I will scour through space as a Mercenary and maybe even start up a Mercenary Company while I'm at it! This ain't my first rodeo in space after all!Except... Apparently my crew members are weird?The guy who bumped into me yesterday was found sliced up and floating outside the space station.The girl who tried to honeytrap me was reported missing with only a finger found in an alley.And then that merchant who scammed me had his entire ship blasted into bits by unknown vessels the very next day.Some people say my crewmates were behind it but they must be mistaken, right?I only know one thing for sure...In space, no one can hear you scream...

Leon was once an ordinary man—until he died saving children and woke up in a new world as the last prince of the demon race. But his awakening comes with a cruel truth: the war is already over.The Demon King is dead. The once-mighty demon empire lies in ruins. And now, Leon stands amidst the ashes, surrounded by a handful of survivors teetering on the brink of extinction.Crowned Demon King by default, he holds the title—but there is no kingdom left to rule. The few remaining demons are barely surviving, hunted and outnumbered. Worse still, Leon, who once enjoyed the luxuries of modern technology, must now navigate a harsh world stuck in the Middle Ages.Can he pull the demon race out of their misery? Can he reclaim the power they once held? Or will history remember him as the last king of a fallen race?Follow Leon on his journey to rebuild, conquer, and defy fate itself.

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 day I got a younger sister.Only I know her true identity.