Reject me, hateful woman

Lin En traveled to a world of brainless cool novels full of protagonists, and became a standard villain and supporting male prince, but he was given a system that makes him stronger when he is rejected.
The harsher the rejection, the higher the reward.
Directly follow the original work and then be rejected?
No, no, no, it's too low-level. The most important thing for high-end hunters is patience. Ordinary rejection is nothing special. Only betrayal can sting like adding salt to a wound!
Becoming good friends with the rising protagonist who is not optimistic by everyone, his true identity is suddenly exposed on the eve of the critical assessment for the other party's promotion [Empire's Cuckoo Pigeon]