MTL - New Times, New Hell - Chapter 4 Arrest the evil spirit

A young man playing games in his basement is struck by a mysterious bolt of lightning, killing him instantly. However, he wakes up in the body of a disgraced young lord, now tasked with managing a ruined, crumbling kingdom. With no experience and a tarnished reputation to overcome, his future seems bleak.Fortunately, he possessed the Omnishop System, a mysterious tool that enabled him to purchase skills and supplies as well as upgrade his existing skills using points. Rebuilding the kingdom is no easy feat, but Alexander has his sights set on more than just survival.With ambition burning in his heart, he dreams of ruling an empire, if he can survive the challenges ahead.

Transform into Divine Dragon and dominate the world!
He is the only Divine Dragon in the sea who founded an underwater Dragon Palace.
With Crawfish Soldiers and Crab Generals as his followers, wild sharks and gigantic octopuses as his subordinates, he is the dragon that rules the city.

- Description from Novelupdates

Raelis Varekan was born into royalty but treated like trash. With 0% bloodline purity, he was branded a failure, framed for treason, and executed without a second thought.But despite his expectations, he had come back to the time he was twelve years old, standing in front of the same bloodline testing orb. But this time, something changed.His former 0% bloodline purity was gone, replaced by a 1% result.And with it came something no one else could see: a system that let him grow stronger.[Ding!][+1% Bloodline Purity][Total Bloodline Purity: 2% (Ash)][Next Bloodline Rank at 10% Purity: Ember]With the future burned into his memory and a strange system tracking his growth, Raelis wouldn't make the same mistakes twice. He would become strong and he would use every tool he had to survive the academy and outmaneuver his siblings and the nobles who once betrayed him.And most importantly...Raelis would rise through the ranks and become the one who rewrites the Varekan Empire’s history.

The eldest son of the assassin aristocrat Tuatha Dé.

The skill, experience, knowledge of the previous life, magic, all of which grows his power as an assassin.

Excellent assassins pass through. He was usually admired as the ideal lord, and behind it wielded a blade as an assassin aristocrat.