Please, Forget About Vivian summary:

“Marry me, Vivian.” I believed that I could have a happy future together with him. However, after he became emperor, everything started to change. His attitude suddenly changed. A strange rumor that he has an affair with a princess every night. In the end, I was confined to the imperial palace, and I only did what he told me to do. Then one day... “You are pregnant.” I don't need children.” What should I do, if I stay silent, I will lose my child.. I will protect my child even at the risk of my life! So Vivian decided to erase herself from everyone's memories and leave. “Stop it, forget me.”