I have a Death Note

Chen Yi had been reborn into a parallel world and carried a Death Note with him. As long as he knew someone’s real name and appearance, he would die once he wrote down their name and cause of death!

At the same time, the person who died from the Death Note would have one of their most proficient abilities transferred to Chen Yi. Most importantly, he could also upgrade these abilities.

....

This was a world with a high crime rate. The police forces of various countries were clearly lacking in manpower in the face of such a large number of criminals.

Therefore, in order to solve this problem, a new high-paying profession for the public was born--

But in the future, whether it was a powerful martial investigator or a vicious criminal, they would all be afraid of one person.