Konoha's Tag-System Ninja - Chapter 221 - : The Legend of Immortality and the Day of Delivery!

Liu Ming, since he was young, lived in a savage prison named Savage Island where the prisoners aren’t controlled by any guard or security. When the island sinks due to “mysterious” events, only a handful of people survive – those survivors are then pursued by the government.

On the other hand at another place two practitioners are worrying about what will happen to them because the young master that they were supposed to protect had died.

Their young master looks nearly like our MC
What will happen?

A man was transported to Ancient China and eventually became a servant of a declining household without a male heir. He utilized his wits and modern knowledge to help the household and eventually become trapped in the sea of political turmoils of the period.

- Description from Novelupdates

Yuuta was the weakest, most average guy on Earth—barely surviving college, working a part-time job, and raised in a quiet orphanage with no real family to call his own. But everything changed the night he had a vivid dream... of marrying a stunning, powerful Dragon Queen from another world.He woke up thinking it was just a dream. Until she showed up in his room—with wings, horns, and a daughter who calls him Papa.Turns out, it wasn’t a dream. And now Yuuta’s life is anything but normal.With half her power sealed, the Dragon Queen—Erza—is stuck living in the human world, adapting to cramped apartments, dishwashing shifts, and the chaos of Earth. Yuuta, once a lonely soul, suddenly finds himself with a family, a responsibility, and feelings he never knew he was capable of.As fatherhood, monsters, magical secrets, and mysterious enemies creep into his life, Yuuta must rise—not as a hero, but as a man who has something worth protecting.

The peerless Demon Lord had been reborn. He used a dragon blade to sweep away powerful enemies from every direction and traversed the entire city, attracting countless beauties.