Naruto System in One Piece - Chapter 56

A seemingly ordinary training exercise led Chen Jian and his squad into a completely different time and space.In the post-apocalyptic world, monsters run rampant, and the surviving humans struggle to live under their terrifying claws.To fight the monsters, the living have abandoned everything.Human nature no longer exists; beastliness is the mainstream.To defeat them, one must first become them.-----------------Chen Jian was supposed to be like the others here, pursuing the maddening evolution.But, when the tungsten-core armor-piercing round first penetrated the Kui Niu's keratin armor, he suddenly discovered...Perhaps there is another way to stay alive?

In the Cyberpunk era, the Corporate Alliance dominated the world, with humans and witches alike serving as corporate cash cows, enslaved by advanced technology.Changes were thus unveiled, and Xu Yang, refusing to become a corporate slave, resolved to flee. He intended to rescue the adorable yet powerful witches from the clutches of the giant corporations, embarking on a path of innovation!

Vegeta travels to the Marvel Universe.

For more than ten years, Vegett has grown from a young man who first came to the universe to survive among the major forces to become the only god among the six gods in the universe who is not the innate god – the God of Destruction.

Along with eternity, swallowing stars, death, infinity, and annihilation, they are called the six true gods of the universe. Title – Destruction.

The universe is far more complex than imagined. Not only the local gods of Marvel, the god group, the eternal titans. There is even an angel civilization, a demon civilization, and even Karl, the god of death in the Styx galaxy. The sun god of the heavenly civilization.

Devil Death, but his subordinate gods, Keisha, Thanos, you need to be respectful when you see him.

- Description from novelbuddy