MTL - This Sandbox Game is Unreliable - Chapter 590 Monster, I want you to help me practice

A biker tries to save a cat on the highway and gets hit by a truck (Truck-Kun), he was rushed to the hospital but, due to internal bleeding, he dies only to be reborn as a cat, in a new world with a system.

In this new and vast world, he tries his best to get used to his new body and get stronger along the way. With his overpowered system and skills. To one day become untouchable.

Yo, Hi! I’m Frank, I made a deal with a demon to pay me some money for receiving a guest for a few days every week.
I had no idea about what I have done.
On May 1st, Conan ‘the God of Death’ came to my house. I was forced to let him in and we get involved in a criminal case.
On May 8th, Bruce Wayne ‘Batman’ came to me. I was forced to follow him to fight crime.
On May 16th, Hannibal Lecter, The Silence of the Lambs, came to my home. I can only say that I really can’t stand my guests.

- Description from Novelupdates

Zhuo Yifan was the Demon Emperor. One day, he managed to lay his hands on an ancient emperor’s book, the Nine Serenities Secret Records. As the book was coveted by many, he was targeted by experts and was even betrayed by his student.

In a world ravaged by ruin, where the land is lifeless, skies are smothered by dust, and sunlight no longer graces the earth, survival is a battle against insurmountable odds. Water is tainted, food is scarce, and mutated creatures lurk at every turn. The remaining humans are caught in the grip of a merciless, dying world.Amidst this desolation, Mu Liang awakens a unique and extraordinary gift: the power to absorb energy and evolve. This ability allows him to transcend the limits of nature, unlocking endless possibilities for the world around him to evolve.A humble sapling, infused with the power of evolution, grows into a towering World Tree that blots out the sky. A small land turtle undergoes an unimaginable transformation, evolving into a mighty, world-bearing creature. A tiny spider? It evolves into a malevolent being, capable of manipulating the threads of fate.With the immense strength of a continent-sized tortoise and the power to command the weather through the World Tree, Mu Liang stands poised to create his own kingdom—a world of limitless evolution, where nothing is beyond his reach.This is the story of a man who, in a shattered world, harnesses the power to rewrite fate itself.