Homeless Harry (Harry Potter / BTS fanfic)

AU! Harry was born with a twin brother, Thomas. When Voldemort was killed on the eve, Harry passed out due to the strength of the curse still having some negative effects. Once Dumbledore arrived, he deemed Thomas the Boy Who Lived as he was alive and wailing. This went straight to Lily and James's heads, and eventually, Thomas's too, leaving the true Boy Who Lived to suffer from neglect. Eventually, the youngest twin ran away, finding an abandoned place to make his own. Knowing about magic, when he finds seven young orphans who apparated to England accidentally to escape abuse, he takes them in, teaching them English (he had learned several languages as the abandoned building he took was a library). All 8 live happily until Harry turns 15, when Dumbledore finds him and decides he wants him back...

*I DO NOT OWN HARRY POTTER OR BTS, IF I DID I WOULD BE SEEING BTS LIVE AND TRAINING TO BE AN IDOL RIGHT NOW, NOT JUST FANGIRLING OVER THEM*