The Rook's Christmas

After their friends are killed in a car crash, Sirius and Remus take on the care of their young son Harry. Despite Remus and Sirius's best efforts Harry is struggling with the loss and hasn't spoken since the accident. With the help of a kind bookstore owner and a dedicated elementary school teacher. Harry slowly learns to adjust and appreciate his new family. Sirius/OC & Remus/OC.