Magic's Return: I Can See The Spirits - Chapter 211 Familiar Taming.

The end of the world is full of crises, but Su Chen says not to worry because he has the Red Alert System. That’s how confident he is. You say you have a lot of weapons? Sorry, I have more weapons than I can use here. Let me introduce you to the weather control device. You say the mutant beasts are very powerful? No problem, I have a way to deal with them…

In a world where the strong prey on the weak and nobles slaughter commoners like insects, Alex was just a weak boy who lost everything to the cruelty of fate.For the sake of revenge, he rose from the ashes, determined to carve his path through a world soaked in blood and betrayal.But there is something the world does not know—something even Alex himself has yet to discover...A power buried deep within his blood, ancient and untamed, waiting to awaken.

Roy’s life was nothing special. The only thing commendable was the last few moments when he saved a mother and her child from a drunk driver.
…
It’s really an egg! Damn it, what kind of monster have I become? Did I fall into Hell instead of making it to Heaven??
Join Roy as he ventures through various worlds with the Custom Made Demon King System—a system that allows Roy to draw anything he can imagine and create it through exchanging souls!

Luo Xing travels through the world of pirates and obtains a system of increasing defense power. When he receives different degrees of damage, he will increase the defense points of the corresponding level.

Luo Xing started from Wano Kingdom’s Hundred Beasts Group, step by step towards becoming the strongest.

“Come on, Yamato, hit me, you’re welcome!”

“General Akainu, did you not eat enough in the morning? Why is the magma so warm?”

“White Beard, your Zhenzhen Fruit should be even stronger, right?”

Luo Xing continued to challenge the strong, and what broke the strong was that Luo Xing became stronger and more fleshy, and in the end they couldn’t even break Luo Xing’s skin.

Teacher Kai shouted loudly: “Among the people who have fought against me in terms of defense, no one is more fleshy than you. I, Kaido of Beasts, would like to call you the strongest creature!”…

- Description from novelbuddy