I hate being in pain, so I think I'll make a full defense build - Chapter 416

[Dimensional Magic Cube's Instructions][1. The Dimensional Magic Cube can automatically absorb the energy that exists in the dimension. Once a month, it can randomly open a dimensional channel and perform dimensional travel.][2. The Dimensional Magic Cube has the ability to convert various powers from different dimensions, ready to be activated and used at any time.][3. There is a storage space inside the Dimensional Magic Cube, which can be opened and used at any time.][4. ...]This is the story of a man who once couldn't choose his own future but vowed to live for himself in this new life.Carrying the Dimensional Magic Cube, Riezel arrived in the world of swords and magic and wandered through different worlds, hoping to find a new beginning.===In a nutshell, a story about a man from Earth who got transmigrated into a fantasy world (original world that act as the main world) and has the ability to travel to various anime worlds to become stronger.Visited Worlds:1. Danmachi (Is It Wrong to Try to Pick Up Girls in a Dungeon?)2. Demon Slayer (Kimetsu no Yaiba)3. ...

He rose from abjection and achieved eternity in glory.
He embraced the prettiest beauties and killed the strongest opponents.
He was able to shift the clouds into rain and cover the sky with one hand.
He could overrun the entire world and go anywhere as he pleased.
He pacified wars and held the world in awe.
He was matchless in the world.
However, his hair turned white overnight for his beloved woman and he was on the verge of death.
He was surrounded by enemies who were trying to take his life.
He struggled his way to become mighty and fought for everything he cherished.
For this age, he was the only king of the Dark World.
His name was a byword for might.
As a man living in the world, his only ideal was to pursue brilliance.

- Description from Novelupdates

The protagonist of the world where Lev Razanov lived had already achieved his happy ending. Meanwhile, the world continued to move forward. Until the protagonist betrayed humanity.[You have been killed by the main character.][Hero’s System successfully installed.][Do you wish to return to the past?]Lev was given a chance to return to a time when the story of his favorite novel had just begun.Although he was destined to become an extra villain—a pawn of the pawns serving the real villain, he vowed to end the lives of anyone who had caused him suffering.[Hero’s System inherits your desire from your life on Earth—the desire to do good.]“Who said killing your enemies is an evil act?”[You gain +10 kill points.][You gain +10 heroic points.]***Additional Tags: Second Chance, Past Play a Big Role, Game Elements, Handsome Male Lead.(Third Person Limited Pov.)