Toaru Majutsu no Index: New Testament - Volume 3, Chapter 5: For What Purpose Should That Strength Be Used? The_Old_Glory.

John Browning, a former underworld assassin, went to attend his friend Angele’s wedding party but ended up meeting his former colleagues. Before he could think that the whole wedding ceremony was a setup to catch him, he felt dizzy all of a sudden!

At that moment, he knew that his lifelong friend had already betrayed him and sold him out. John was humiliated in front of hundreds of peoples and was forced to kneel in front of Thomas, the underworld assassin organization leader.

Within a few minutes, they beat him brutally, dragged him to some underground basement, and then locked him in a gloomy room.

John felt bitter when thinking about his friend’s betrayal. He laid on the cold floor for two days and died miserably. But his story didn’t end there.

…

In a world filled with magic and mystic powers, John Browning woke up in an 18-year-old boy’s body. Before he could open his eyes and see his current situation, he felt someone was dragging his body.

'How am I still alive?' He got puzzled inside.

But after a few seconds, John learned from the young boy’s remanent memories that he was transmigrated to a mystical fantasy game-like world filled with magic and mystic powers!

Imagine having the opportunity to be able to enter different worlds created by numerous novels and stories. Which kind of role would you like to play?

Leon is an average high school student who likes to watch anime and read novels.
He's about to cross the street, only to be greeted by a truck and died.
But, he got reincarnated as Uchiha yet dead again because Itachi killed him.
Leon got reincarnated again as the grandson of the recovery girl.
He got kidnaped and tortured by All For One.
After his third death, he got reincarnated as a son of Bibi Dong.
In this fourth life, he wants to change his fate to become the strongest.

Note: Please read the tag before reading.
- English is not my first language, so there would be grammatical mistakes in this story.
- Please give my story a proper review.
- I accept a suggestion, but no spam!

With the strongest experts from the 33 Skies, the Human Emperor, Lin Ming and his opponent, the Abyssal Demon King were embroiled in a final battle. It ended with the Human Emperor destroying the Abyssal World and killing the Abyssal Demon King. By then, a godly artifact, the mysterious purple card that had previously sealed the Abyssal Demon King, had long disappeared into the space-time vortex and tunneled through infinite space-time, with a loved one of Lin Ming accompanying it.

In the vast wilderness, where martial arts was still slowly growing in its infancy, several peerless masters tried to find their path in the world of martial arts.

A young adult named Yi Yun from modern Earth had unwittingly stumbled into such a world and began that journey with a purple card of unknown origin.

It’s a magnificent yet unknown true martial art world. This is the story of a normal young adult turning into a legendary peerless expert.