Historias de Amucentric

Every betrayal has a reason behind it, Amu also had one. She wished to keep them safe, and away from darkness that was consuming her but fate had other plans. No matter how much they despised her, they couldn't help themselves from getting drawn in her life once again. A certain blonde is determined to get Amu back to her side, She has to repay her back by giving her the Best - just something one expects from a best friend. But... who is this pink-haired boy who calls himself as Amu's twin? Just what happened in Amu's past?