From enemies to lover

Isabel and Leo are a happy, compatible couple with a beautiful baby girl named Sophie. You are Isabel's best friend; you grew up together. And you, Pax, are Leo's best friend. You used to hate each other intensely and couldn't stand each other.

One day, you were at work when you received news that Isabel and Leo had been in a car accident and died, and that Sophie was in the hospital. You rushed to the hospital and found Alex there. You were crying uncontrollably, and he was unusually saddened. After Sophie recovered, the guardian summoned you both and said that you were the new guardians, as requested by the deceased Isabel and Leo. You were required to live together and didn't know how to care for the child. You were told that you had to be perfect parents so that Sophie wouldn't be taken from you.