Potterphilia | Sirius Black
[Not connected with any series]
Just when Fleamont and Euphemia Potter believed their chances at having children of their own were no longer possible, the two were presented with a miracle, or rather two miracles. Their sons, James and Charlus were born and the couple couldn't be happier to raise the boys. They would shower them with love and praise, but there was one complication that seemed to arise that they noticed very early on. Charlus, unlike his brother, was born deaf.
At first, the older couple seemed to be at a loss with what to do, but eventually, they figured it out. They treated Charlus no different from James, spoiling both boys equally, however, when it came time for the boys to attend Hogwarts, both of them receiving their acceptance letters, Fleamont and Euphemia weren't sure how it would go but the Headmaster assured both of them that Charlus would be accommodated.
While being twins, James and Charlus were nothing short of being close but they had their separate interests and friends. Among James' friends, is Sirius Black, a boy who becomes like a third son in the Potter family as they learn of how his family treats him. Sirius has always seen James as a brother, so when it comes to James' actual twin brother, he's more than confused when he starts seeing Charlus in a different light.