Infinite Mana In The Apocalypse - Chapter 1 - Awaken

In a post-apocalyptic fantasy world layered into multiple realms, humanity faces extinction due to their endangerment of the main realm. Forced to merge all realms back into one, a deity grants humans a leveling system to empower them, lest they become extinct when facing the mythical creatures. Noah, our protagonist, embraces the role of a monster tamer, trading his humanity for strength and eventually transforming into a monster himself. As Noah struggles with his evolving identity, he must navigate a world where the line between human and monster becomes increasingly blurred.

Reborn in the Naruto world, Shin Uzumaki finds himself in the doomed Land of Whirlpools. As a member of the Uzumaki Clan! Trapped in a world filled with war, betrayal, and unimaginable power, Shin’s survival seems impossible.. Until it isn’t!![Ding! Replication System Activated!][Daily Login Reward: Common Replication Card.]​​​​​​​[Newbie Gift: Perfect Sage Body—​​​​​​​Adamantine Sealing Chains​​​​​​​—​​​​​​​​​​​​​​Four Symbols Seal​​​​​​​]With the power to Copy any Ability—whether it’s the Kekkei Genkai or Rinnegan or Forbidden jutsu—Shin begins his journey to dominate the Ninja World. [First task: Save Kushina and prevent the destruction of the Uzumaki Clan.]

When he woke up, Rono traveled to the world of pirates.

I thought I could live happily and peacefully.

But the appearance of Tianlong people broke this situation!

Rono, watching his parents being shot to death by Tianlong people!

Under extreme anger, Rono awakened the system and vowed to kill all the Tianlong people!

From then on, a [Extremely Evil One] who specialized in hunting Tianlong people was born!

Wherever Rono went, the Tianlong people shivered!

Admiral?

Two more and I will kill all of you rubbish!

Karp: The Evil One?

He is a monster created by the Tianlong people, and one day the Tianlong people will pay for it!

Roger: 【One Piece】?

Compared with [The Evil One], it’s nothing but a cloud!

Whitebeard: [The strongest man in the world]?

No, no, Rono is the strongest!

Rocks: In terms of killing Tianlong people, Rono is the first, I am second, everyone else is garbage!

- Description from novelbuddy

I gave them my everything.My time… my strength… my heart.I trained while they slept.I smiled when they laughed.I stayed… even when it hurt.And what did I get?Nothing.They looked at me like I was pathetic.Like, I didn’t belong.Like I was… less.But I... the naive person I am, continued trusting them.They told me to act like trash, fine—I became trash.They told me to act like a scumbag, fine—I played the role.However...One mistake, one single moment...That’s all it took.And they threw me away.But now…Someone else woke up in my body.A stranger, a man who doesn’t know the pain I suffered, but wears my face.Let’s see what he does with it.Because me?I’m done with this life, so to the soul who took over my body...This is your mess now…'Gray'.