[Crossing the line into forbidden territory | pseudo-siblings | intense push and pull | stealing someone's partner | long-planned desire | five-year age gap | fiercely possessive | mutual salvation | true and fake heiress | sweet romance | both leads' first love]
A meek, sweet girl who plays the good daughter in public vs. a cold, abstinent, dangerously unhinged CEO
A strong-willed top student and calm avenger vs. an intensely possessive, out-of-control puppy boy who only has eyes for her
One wild night: Her mother sells Li Yang to her employer's family for a high price as part of a marriage alliance with a wealthy clan. In rebellion and revenge, she gives herself to a man she had a one-night stand with the night before.
A hellish engagement: At the engagement banquet, the brash punk she'd casually offended turns out to be her fiancé, while the man she'd drunkenly slept with is none other than her fiancé's second uncle.
A forbidden identity: Even more absurdly, the head of the Luo family announces that she's his long-lost illegitimate daughter, making her one-night stand her biological older brother.
A double identity: Her one-night stand, Luo Sinian, has become both her second uncle and her biological brother, but he doesn't care about their supposed relationship at all.
Luo Sinian pins Li Yang against the wall and kisses her until she can hardly breathe. "I'm teaching you what it means to cross the line."
When his nephew, Luo Ciyuan, catches them, he asks, "Second Uncle, Auntie, do you even care that I'm here?"
Luo Sinian leisurely lets Li Yang go. "An older brother looking after his little sister. Got a problem with that?"
A shocking lie: Who would have thought the heiress was real, but the brother-sister relationship was fake? The whole thing was an enormous deception.
Please note:
1. Both leads come from unhappy families. There's a little angst, but they're devoted to each other.
2. Neither lead is quite right in the head, and both have some psychological issues. The male lead is domineering but listens to the female lead, and loves only her, unconditionally.