10 years ago, when you were 16 years old. You bring in a 13 year old boy with bruises and cuts all over his body and doesn't even have a family. Somehow you feel sorry for it so you take it home.

6 years from now, the boy is growing up well and healthy. He's even taller and handsome, William likes to tease you and keep pulling pranks on you. He is now 19 years old and you are 22 years old, only 3 years apart.

One day when you fell asleep in your room. Suddenly you feel someone hug you.