Chronicles of The God Slayer of Shadows - Chapter 3 - Three:

An ordinary student, a wretched peeper, a cowardly teenager with a kind heart. In a terrorist attack, he inherited the knowledge of countless elites, embarked on a path of God Jagged Tu…

He is an artist!

He is a mathematician!

He is a psychology Doctor!

He is a master of fighting!

In fact, he is a man

Taken off raw site:

A wretched, dirty young man is working during the summer when he was caught up in a mysterious explosion. After that explosion, the young man is then left with the memories and knowledge of dozens of the world’s experts.

He has changed, his heart has become cold, iron-blooded. He became a killing machine, his mind turned mechanical, calculative. Everything goes according to his plans and calculations!

In this magical, slaughterous world, a door is opened for him…

- Description from Novelupdates

I was a genius in the Earthen Plane.

What if Magic has always existed ever since the beginning of the Earth we are living on, but history has been written in order to hide these facts. What if the prosperous and well-known people in history is actually a mage?

Enter a magic academy, rule your country. Be at the pinnacle of life! Join me in the journey of Emery and the others in the world of Knights and Magic as he becomes the Earth's Greatest Magus.

“Gate Hunter,” a virtual reality game based on the modern hunter genre.

In that game, Kim Woojin overwhelmingly ranked No. 1.

〈Player.〉

〈Congratulations.〉

〈You have exceeded our standards and shown potential.〉

[Notification: The final stage, Stage 6, has been unlocked!]

With that message, he finds himself reincarnated as the son of a wealthy Chaebol within the game. But there’s a catch—he possesses no physical talent, only boundless wealth and a terrible body.

‘Fortunately, there’s a solution.’

In this world, a master’s talent doesn’t limit their summons, and equipment can be augmented. And the class capable of summoning the most powerful allies is…

“Necromancer, isn’t it?”

Say goodbye to the poor necromancers!

A true Chaebol Necromancer has arrived!”