MTL - Black Dragon Kingdom - Chapter 511 generous compensation

A former sporting rifle shooter genius transforms into the ‘Juvenile Butcher’. While originally supposed to have received the death penalty, he was instead fortunate enough to have entered a secret and highly regarded armed force, throwing himself into the ‘Nirvana Project’.

After a period of 10 years, he now has time to freely recover. Having trained until he had excellent military and martial skill, he sweeps through various military districts and returns back to his hometown. Under the monitoring of a beautiful female cop, he re-establishes his family’s bodyguard service, protecting beauties and moving unhindered, his achievements causing the fame of his outstanding, god-level bodyguard service to resound across the world!

- Description from Novelupdates

Crossing to One Piece world, he became Roger’s younger brother.

At age 5, Amon unlocks the unique «Fury» genetics and is what caused his behavior to change.

After living with his grandparents for 11 years he learned to behave. For reasons he can’t know, his grandparents faked their deaths, and now he needed to move.

Now he would have to face a new challenge which was to live with his mother and stepfather and two twin sisters not linked by blood and go to school.

The number one bachelor of the city, Qin Nanyu, has a mini-me son who's a prodigy. They hate each other.Qin Nanyu's biggest wish is to have an adorable daughter.One day, his wish suddenly became true --“Baba, can I be a model and make money?” The money-obsessed little princess asked.“Of course.”“Baba, can I go on TV shows and make money?”“Of course.”“Baba, can I sell you for money?”Qin Nanyu: “...”Baby, if I gave you all of my money, can you sell your mom to me?One sentence synopsis: Boy-girl twins... one plus one. Read on to see how the alpha billionaire pampers his wife and kids!