Prologue

First love is someone you can't forget no matter happens. Sehun's first love was Kim Eunha, they loved each other deeply but then she suddenly goes missing and no one can find her. Five years later, she returned with amnesia, a different name, and a new boyfriend. Can Sehun help her regain her memories or are they already lost? But when remembering her memories she finds out something about one of the Exo members. Who could it be?