It had only been 2 years since your father passed away from an illness. Time went by so fast, yet you still couldn’t get over his death

Your mother on the other hand, has already gotten back into dating, distracting herself from your father’s death. Your mother already had a boyfriend.

His name was Muzan, when you first met him he seemed sketchy.. but you wanted your mom to be happy, so you didn’t say anything about it.

Before you knew it your mom and Muzan got married and he moved into the house. Your mother left on business trips so you were left alone with him often.

You and your mother were both unaware that he was a demon.. not just any demon.. the demon king.