After Deceiving the Yandere, He Went Completely Mad

[Younger Man + Major Twist + Love and Hate + Happy Ending + Both Pure]

Pei Yanqing grew up in the Su family, where he realized he had developed feelings for his older sister, Su Yao, that he shouldn't have.

The day she discovered his feelings, Su Yao gave him no chance. Before long, she arranged for him to go abroad.

Three years later, Pei Yanqing returned, his feelings for her unchanged. He used every means at his disposal to win her over.

Later, she pretended to give in and tricked him into believing she loved him,

then left him behind and walked away when the time was right.

He still came after her, even building a secret garden for her.

Gradually, Su Yao realized something was wrong. He didn't merely have psychological problems: he had dissociative identity disorder.

To keep her by his side, Pei Yanqing was willing to submit to her.