[Crazy Villain Who Makes All Kinds of Trouble x Sunny, Wooden Puppy Bottom | Romantic Rivals | Love Triangle | Two Idiots Fall in Love | Seems Universally Hated, Actually Universally Adored]
One day, Su Lin transmigrates into a book and ends up in the body of a cannon-fodder character with the same name. The character dies without a whole body by the third chapter, and in his final moments, he's bullied to death in a male brothel.
It's all because the book's crazed villain, the crown prince, allowed it. The cannon fodder had only helped him detoxify two days earlier! And this is how he repays his benefactor?!
No wonder he's a villain: ruthless and vicious.
As it happens, Su Lin transmigrates into the night he acted as the villain's "benefactor." After a night of tossing and turning, Su Lin opens his eyes and immediately makes a run for it.
But his good luck doesn't last long. He's found.
Su Lin has no choice but to do everything he can to please the villain. When the villain chats and laughs with the protagonist, Su Lin fans him. When the villain falls out with the protagonist, Su Lin teaches him how to win the protagonist's favor. When the villain gets engaged to the protagonist, Su Lin offers his congratulations!
Even when the protagonist's group forces the villain to choose between the protagonist and Su Lin, allowing only one of them to live, Su Lin sensibly and briskly chooses to die first, so he won't cause trouble for the protagonist's group or the villain.
All he leaves behind is a villain fuming helplessly in utter confusion.
Just as Su Lin is secretly celebrating that he can finally get away from them, the whole country starts searching for him, including the protagonist's group, who have always disliked him...
The villainous crown prince: Don't you people have wives?! Why are you all coveting mine?!
[The top and bottom are actually two idiots who've never been in love, falling in love. They both love each other, and everyone else is just there to move the romance along.]
[No idea what might be a dealbreaker. The author has no dealbreakers.]