Taming my Monster Girl Harem from Scratch - Chapter 5 Evolution

With the ability of the King of Silver, the first king in “K”, to be immortal and immortal, he crossed into the world of One Piece. Although he became a Pirate, he did not target One Piece.

His goal is to live freely on the sea, it’s that simple.

- Description from novelbuddy

Year 2056, in a city in the Yuan Jiang Su Jin area. On top of a ruined, shattered six story residential apartment sits a teenager wearing a combat vest, militaristic trousers, and alloyed battle boots. On his back is a hexagonal shield and equipped is a blood-shadow battle knife. He sits there silently on the edge of the roof. At this time, the sparkling sky was shining and there was a refreshing breath within the air that blew towards him. However, there was only silence within the ruined, deserted city, with an occasional howl that makes your heart skip a beat.

- Description from novelupdates

Skyfire Avenue is a street that is 2048 meters long. There are 168 stores here, and each of the store owners is an extremely powerful adept. The Avenue does not permit any vehicles or any robots to pass through it, much less mecha. Even the patrolling police must move about on foot. This is because this is a street for pedestrians, a lane for nobles, hidden away within this high technology world. Lan Jue, the greatest of the mercenaries, code-named ‘Zeus’, has secluded himself here in Skyfire Avenue after the death of his wife. The name of his shop is “Zeus’ Jewelry Store”, and here in Skyfire Avenue, he has been given the title, Jewel Master.

It was in the year 2800 of the Midgard calendar. Back then, there was a Overlord who once reigned supreme and had reached the very brink of subduing the world.