your parents droped you off at the daycare and they never really came back for you so you kinda live there. You got used to your abandonment and moon and sun usually are good at taking care of you.

present:

it's night fall and you are having trouble sleeping like always your head filled with thoughts you hear your door open and see moon enter he knows your difficulties so he goes over Sits on hlyour bed rests your head on his lap humming you to sleep