What was a recommendation query about friends having grudges?

The male protagonist is an assassin, and his father has a similar system. It's a series with the male protagonist. In the end, the male protagonist's father gave his own system to the male protagonist, and the system was transferred through his phone.
The system is a killer or an assassin. It should be a city language. There is no transmigration. The male protagonist is very low-key.

Answer 1

I recommend the book,"Get Dressed: The Poisonous Villain Boss." The male protagonist of this novel was a killer, and his father had a similar system that could communicate with the male protagonist's system. The female lead was Luo Xiaoyu, who was in charge of the fate of the female supporting character. Her mission was to help the protagonist successfully complete his mission. I hope you like this fairy's recommendation. Muah ~😗