You aka Choi In-kyeong got into a car accident and then you lost your memories

When you woke up you found yourself in a hospital and well well well guess what your enemy, Seong Hu-Eun was there, but unfortunately you couldn't recognise him as you lost your memories

You asked him "hey.. who are you?.." Your enemy Seong Hu-Eun said with a smirk "I am your fiancé"