Mobile Suit Gundam SEED Trinity

They thought it was over, he thought she was gone so he moved on. But when a third war arrives, how does Kira know what is the right decision to make. Whether to take up arms and fight again, but is the war the only battle he's really fighting. Takes place after Gundam SEED Destiny, crossover with Supernatural. Kira/Lacus/Flay love triangle.