Xu Chuan, an illegitimate son who was regarded as a "waste" by his family, grew up under the glare and suppression of his mean elders. He has been secretly in love with his childhood sweetheart Lin Xue for three years, but he is just her "spare tire" who is always there for him. Until one day, at Lin Xue's birthday party, when he was humiliated in front of everyone, something claiming to be an "alien emotional system" exploded in his mind: "It has been detected that the host has been in a 'dog-licking' state for a long time, and the emotional entropy value has exceeded the critical point! The system is forcibly activated - blackening mode!"
When Xu Chuan opened his eyes, a strange blue data stream flashed in his pupils, and the "emotional rules" of the entire world became operable codes in his eyes. He could see the "emotion value" above everyone's head - Lin Xue's favorability score for him was only a pitiful 12 points, while the mean aunt's dislike for him was as high as 89 points.
What's even weirder is that the system told him that in this universe, emotion is a kind of energy that can be quantified, manipulated, and even plundered. Human beings are nothing more than "emotional batteries" kept in captivity by alien civilizations.
Xu Chuan smiled. Since you use me as a backup, I'll let you have a taste of the fear of being dominated by a yandere.