Naruto: The Outsider's Resolve - Chapter 2.17 (048):

Why is it “Hero” that “Savior” that? Why is it always the same happy ending? “Happy” “Good” “Perfect” endings? You know what? SCREW IT. I will give you all the worst possible ending possible? Why? Because I’m an asshole!

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

All my life, I never once know what it is to be a family. My parents did not care about me and didn't let me start with my siblings.Even when I diagnose with Terminal Illness by the doctor, they did not care about me.The only thing that accompanies me in this lonely hospital bedroom is the game called Second Life. Sadly, all good things must end, and so is Second Life.I decide to stay inside the game until the end and wait for me to release my final breath.However, I'm reincarnated to another life when I open my eyes. I promise to enjoy my Second Life in this world.Now, if only this woman stopped calling me a villain for a second, that would be great.

In the middle of the night, looking at the woman in his embrace, he smiled devilishly, “With your discontentment, do you want me to continue?”