Warlock of the Magus World (WN) - Chapter 5

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 reincarnated as a lizard in a martial arts world.“Roar!”“He’s using the lion’s roar!”“To deflect the Ten-Star Power Plum Blossom Sword Technique! Truly indestructible as they say!”“This is… the Heavenly Demon Overlord Technique! It’s a Heavenly Demon, the Heavenly Demon has appeared!”It seems they’re mistaking me for something else.

My older brother, who was my only family member, lost his memory. “I have a sibling? Are you kidding me?” He was a fool who cared for me ever since he brought me from the temple… “I can’t even take care of myself, so what is this…” I left the family because I didn’t want to be a burden to my older brother, who had no memory, and was helpless in the tragedy that followed. So I turned back time. That too, to the point when my brother lost his memory. “I don’t have anything in my head, so I don’t know what to do next. What if I have a kid with me?” We must not repeat the tragedy of the past life. So I grimly said, “That’s right. I don’t have anything on my brother’s head right now.” “…What, what?” I chuckled and took out a document I had prepared. The contents of the document, written in crooked, large letters, were simple. [I transfer all the property in my name to my younger sister.] While my gaping older brother was checking the documents, I took out his seal from his drawer and smeared it with ink. Then I put it in his hand and said with a very sad expression. “So stamp it. Now.” I will protect you in this life.

Zhou Xu, who had just graduated from college, suddenly received a call from his father.

“My son, since you have grown up, there are some things that a father should tell you.”

Zhou Xu: “Dad, how do you speak in a succinct manner? Half white or not, what TV series are you watching?”

“My son, it’s a showdown for my father. For my father, you are a giant of the devil. You are the son of the devil.”

Zhou Xu: “…Dad, I’m hanging up, I’m busy.”

“Wait, there’s one last thing. Aren’t you too young? Your mother arranged a blind date for you. See you.”

Zhou Xu: “Who is it?”

“Like you, the devil goddess at the opposite door.”

- Description from novelbuddy