MTL - Feng Mang - Chapter 283 eye for eye.

Genius Female Forensic Scientist VS Tough Criminal Police Captain[Mystery + Detective + Sweet Romance + High-IQ Crime + Serial Killings + Psychological Profiling + Suitable for the Faint-hearted]Schizophrenia, antisocial personality disorder, high-IQ crimes… This is a world where psychopaths run rampant.The Cat Fetus Case, the Lovers’ Butcher, the Angel of Death… Evil delusions always invade reality, accompanied by violence.Their First Meeting:Mu Mian asked very sincerely, “Hello, would you be willing to donate your body to me after you die?”Later:Fang Rui: “If I fell into the water along with a victim’s corpse, which one would you save first?”Mu Mian: “You!”Fang Rui looked at her with some surprise.Mu Mian: “Because the corpse will float by itself~”

Zixin dies from Qi Deviation and an Earthling transmigrates into his body, the Earthling then accepts his new identity as Xong Zixin and embarks on a new journey of cultivation.Zixin later discovers that he actually has a System called Attack Catching System which like its name suggests, captures and stores attack from people who attack him.…[Ding! 1002 punches from a Core Condensing Realm have been captured successfully!][Ding! Qi Deviation has been successfully captured!][Ding! Soul Possession Attack has been captured unsuccessfully.],...Follow Zixin on his unparalleled journey to the peak of martial arts, releasing saved attacks on his enemies and competency obliterating them.

Our protagonist Caam is a man from Earth that was reincarnated into this world as a demon. In order to survive, he spared no effort in avoiding the sparks of battle and without noticing it, he became strong himself.

There is always such a person in the world, his family background is better than yours, his status is higher than yours, while you work hard and think all the way up, but with just a wave of his hand, you are wiped out. What is even more sad is that he doesn’t even know who you are.

Zheng Jue met Han Jin like this but he didn’t realize this truth until he died. In the end, he had found the wrong opponent and ultimately lost his life.

- Description from Novelupdates