Cursed Bloodline: Awakened a Hidden Class in a Game World - Chapter 1: Six Years Gone?

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

Sky is not born of Shen Huan, millennium is like night.

This is a rebirth who wants to release himself, and has an interesting life story after getting a less serious system.

- Description from Uukanshu

Ethen Cole travels to an era where everyone battles with pets. In a world revived by spiritual energy, danger and madness run rampant. Humanity relies on battle pet masters to establish bases and unite for survival.Before the college entrance examination, Ethen Cole is framed and expelled from school, losing his chance to study at the Battle Pet Academy. Just as he feels despair, the Battle Pet System for battle pets activates.“Ding! The Blue Riolux has evolved into a Emerald eyed Riolux!”From then on, Ethen Cole begins his legendary career as a battle pet master.

He has won the most flamboyant compliments and the most vicious swear words.

He is a guy with rebellion flowing in every vein in his body.

He’s a white kid who’ll never be a celebrity.

He is a young man from the countryside in the eyes of the public.

He’s Tommy Hawk.

He was born again.

Welcome to the first half of the American Dream and the second half of the American Nightmare.

Let us please, come Tommy Hawke, in the winter of 2022.

- Description from novelbuddy