I’ll Quit as The Empress - Chapter 114: Taste Of Happiness

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

On December 11th, the apocalypse began. A new, mutated coronavirus—the Zeta variant—spread worldwide, and it was far more deadly than any version before it. Those infected without strong immune systems turned into zombies, and within two days, chaos reigned, wiping out 80% of humanity.Zack, an ordinary guy, found himself in the middle of this nightmare, struggling to survive. Lacking the skills to fight off the zombies, he was soon overwhelmed and met a tragic end… or so he thought.When Zack suddenly finds himself alive again, he’s back at the start of the apocalypse but with one huge difference—an advanced AI has armed him with powerful technology. Equipped with a zero-point reactor, power armor, a super serum, and much more, he now has the tools to turn the tide.Follow Zack as he builds a new civilization from the ruins and fights to reclaim the world in this thrilling journey of survival and innovation.

Entering Tokyo in the bubble era, in this strange era, the only familiar ones are Matsuda Seiko, Nakamori Akina, Kudo Shizuka…

- Description from novelbuddy