MTL - Unexpectedly, I Traveled Again and Again - Chapter 15 New World "Demon Slayer: Blade"

For the sake of the world, the Protagonist must die.“I... I think I like--”Whether you’re just a girl who fell in love with the wrong person.“N-no...! If I can go back... just one more time...!”A man who regresses to save the world.“Hero... Please, kill yourself.”Or a destined Hero chosen by the Goddess Herself to kill the Demon Lord.No matter what your purpose is, no matter who you are.Even if the whole world and everyone close turns against me...[The target, ‘■■, the Hero’, has been dispatched.][Contract complete.]...The Protagonist cannot be allowed to live.

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

At first, when he learned that he was forced to go to many different routine worlds and be reborn into all kinds of cannon fodder, he was against it.

Because villains usually all only have a moment of satisfaction, the endings of cannon fodder are also frequently quite miserable.

But the man who gave him the system told him that this system not only has all types of powerful functions, but he can also break the routine lives of the cannon fodder. If he achieves this satisfactorily for each world, he can even become a god.

He’s already experienced over a thousand reincarnations, but hasn’t yet been a god. Since it sounds pretty great, why not just try it out.

From that moment on, he began the irreversible path of tyrannically oppressing people, while conveniently tearing open those white moonlights and so-called righteous people’s hypocritical masks.

His goal: wearing the villain’s role to walk other people’s righteous paths, leaving them no path to follow.

- Description from novelupdates

I finally managed to kill the demon lord.