Bambi AU
Because come on sweet, innocent boy separated from his loving mother while trying to form a relationship with his strained father. You don't think that rings Bambi? Well I think it does.
Adrien is the son of the ruler of the forest but according to the law of the forest he is forbidden from having contact from his father because the ruler must not expose he loved ones for fear of assaians from a rival kingdom. So Adrien is raised by his mother and grows up with his childhood friends Nino, Alya, and Marinette who has a crush on him and his mentor Master Fu. Despite never knowing his father he is content until his mother is shot by assaians so now he must be raised by his father.