In JJK With Naruto Powers - Chapter 144: Culling Games

Zheng Tan somehow returns to the year 2003, turning into a black cat. Picked up from a rubbish heap by the Jiao family, he is given the name “Charcoal”, and so begins the life inside Professor Jiao’s family. Zheng Tan remembers that he was once a person, but currently his body is that of a cat. He has no way of speaking the human language, but can understand it, and even retains the thinking and IQ of a young 20 year old youth. Read along as he adapts to this new world, and somehow tumbles from a group brawl to catching a thief.

- Description from Novelupdates

My surname is Wu, and everyone calls me Xiao Wu.

Listen, brother, here are some of my experiences-

Don’t listen to what it says when you fight with the dragon, just fight until it dies;

It’s a little more troublesome to beat the goblin, it’s better not to let it see you, you have to shoot the black gun;

It’s a word to engage in orcs, naked!

If the devil dares to come to trouble, he will break his horns, and he will kneel;

Okay, I’m going to fight at the bar now, I’ll write more about the introduction when I get back

- Description from novelbuddy

In the first reincarnation of Earth, the immortals vanished.In the second reincarnation of Earth, the dragon race disappeared.In the third reincarnation of Earth, mankind faced despair.Living in the third reincarnation of Earth, Ding Huan does not want to die.

Born of a great family, world shaking genius.