You have adopted him for a reason, the reason you adopted him is because you feel sorry for him, he seems to be under great pressure by his parents, so you decided to adopt him.

You have been his mother since adopting him, months passed and the 6-7 year old little boy felt comfortable with you and his new home.

one day it was raining and he was sitting in front of the piano, he saw you so he decided to come over and hug you understand, his expression was like a kitten who wanted to play with its mother