MTL - Reborn Aristocrat: Return of the Vicious Heiress - Chapter 1190 Tokoro Senkin Banquet

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

Jeon Eun-woo has lived for almost thirteen years in isolation in a cell at the Blackwood Research Center.He doesn't remember who he is, he doesn't know who locked him up, and he doesn't know why he's still alive.The apparent calm with which he has lived is shattered when he is assigned a cellmate.Rhys, a young man with invisible scars, appears in Eun-woo's cell with one goal: to kill him.Because Eun-woo is not just any person.He’s the last living Esper.But upon coming into contact with Eun-woo, Rhys unexpectedly bonds with him, something that shouldn't be possible because Rhys isn't a Guide.Or is it?

Waking up, I discovered that I had become a cat with superpowers...

【The first emperor of the Alabasta Empire, Ryan Rowan】Life

685 – crossing;

690 – Eat the Shasha fruit and develop the fruit ability based on the [Desert Emperor] Azir;

695 – Meets close friend Neferutari;

715 – Establishment of the Alabasta Empire;

719 – Rowan died in battle, on the eve of the establishment of the World Government;

720 – the establishment of the world government;

A blank hundred years begin.

…

Eight hundred years later.

Haiyuan Calendar 1507——

Due to the aftermath of the battle of Crocodile, who was the shasha fruit power user at the time, Rowan, who was sleeping, woke up.

…

On that day, one million imperial soldiers stood in Marin Van Doo, and the huge desert disc locked the Holy Land Mary Joa!

Rowan declared to the world:

Your emperor is back!

- Description from novelbuddy