MTL - Porter of Two Worlds - Chapter 1320 Be clear!

“His novel. His rules. His fight to take it all back.”Who would have thought Tavian would end up trapped inside his own novel?Not the chosen one. Not the villain.Just a forgettable extra with laughable stats and no place in the story he once ruled.And the protagonist he shaped into a perfect weapon?He’s real—and hunting him.Armed only with the knowledge of the world he created, Tavian has one choice: exploit the system he built… or be devoured by his own creation.He knows how the story is supposed to end.And he won’t let anyone else decide his fate—especially not the characters he once controlled.

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

Akira Kisaragi traverses into the Bleach world, unlocking a check-in system.He initially thought that by checking in daily, he could become stronger, soon become the Captain-Commander, join Division Zero, punch Yhwach, kick the Soul King, and marry Unohana...However, the system's style wasn't quite what he had imagined.〈 Check-in complete, obtained Genryūsai Yamamoto's secret roasted sweet potato! 〉〈 Check-in complete, obtained exclusive attribute: King of Normal Attacks, effect... 〉〈 Check-in complete, obtained Retsu Unohana's... 〉Akira's eyes suddenly lit up!“Seems like this might not be so bad after all!”

A boy wakes up with omnitrix as a X-GENE