Drama Queen Boss, Spoiled Rotten

Gu Yu, the noble legitimate daughter of a marquis's household, was framed and left with her family in ruins. After transmigrating, she became the real heiress who had been switched at birth. After spending decades displaced by an impostor, she finally returned to the wealthy family, only to be bullied at every turn. Gu Yu didn't care. She had a wealth of knowledge from ancient times. But what was with this shameless, deranged man who suddenly latched onto her? Gong Yu was the one person in the Gong family no one dared provoke. Crazy and obsessive, he conceived the desire to possess Gu Yu completely the moment he laid eyes on her. Later, Gu Yu dazzled everyone in gorgeous traditional clothing, with a stunning song and dance. Ex-fiancé: Gu Yu, I was wrong. Please don't fall for anyone else, okay? Campus heartthrob: I'm pursuing Gu Yu. Anyone who dares bully her will answer to me! Gong Yu: Marry me. You can focus on looking beautiful, and I'll help you deal with the trash! Gu Yu: Make way. I want to shine on my own! (A sweet modern romance with an ancient-era transmigration. The male lead was obsessed with the female lead in his past life, and that obsession carries over into this one.)