Assassin's Chronicle - Chapter 566: The Cost of Lying

One day, a handsome young man died in a car accident. He suddenly wakes up and find himself in an unfamiliar place, but what surprised him most is that he is taking over someone else’s body.

The little security guard, Qin Yu, was chosen by a glamorous and wealthy CEO to become her personal bodyguard. Little did he know, this glamorous and wealthy CEO had a double identity, and was actually his wife from a flash marriage a year ago, registered and all. Neither of them recognized the other, but as they lived together day and night, one awkward situation followed another. They had become the most familiar pair of stranger spouses!

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

The dominant forensic doctor who traveled back in time to the era of the Great Tang's Zhenguan reign, became a distinguished family's abandoned girl.