Kill La Kingdom Hearts

This is a good one folks (maybe). After the Xehanort saga the master of darkness fell to his eternal grave and Sora and his friends decided to recreate the nation of Keyblade wielders. Over the years they grew older training many heroes as well as giving birth to their own. Out of all of those young heroes there was the one who was considered the runt of the litter named Koga Shirai. He was a trouble maker but gifted with his keyblade, Nightwalker. The masters Like Aqua and Sora saw potential in him and promise to train him to do great things but mysteriously war erupted among the nation. It was a war that nobody survived but Koga but and a girl that wasn't even a keyblade wielder. With her long black hair, white and blue dress and tears in her eyes, she ran away and Koga followed from a distance knowing that whatever reason this war began she knew what that cause was. This led him to a strange school full of powerful warriors with strange clothing and in that school was a girl in red and black that rebeled against the authority. Will this make them allies or enemies? You'll have to read to find out.