My Name is Max (слэш)

Prompt:
I recently read a minifill wherein Charles died trying to give birth to a son and Erik never got there in time because when Charles wrote to him to tell him the news, Erik ignored all the letters.
Could we have fill somewhat like that but Charles survives and Erik never knows having never read and thrown out almost all the letters. Then come years (up to the anon how old the child is) later, Erik finds out that he is the father and confronts Charles. Accusations fly until it spills out that since Erik never replied, Charles assumed Erik never wanted anything to do with them.
Summary: Max Xavier, 7 year old telepath and genius, attempts to make his Daddy feel better by bringing his Father and Aunt Raven home.