During the mission in Nibelheim, he went crazy. His life was a lie. Everything he knew was a lie. His mother and his real reason for existing. All a lie and the world had to pay for it

After he went insane, he set fire to plenty of towns. Then, he went to find you. He knew where you would be. He wanted to see you one last time before he set the world on fire and made a new one

His blade dragged across the floor as he held it. He searched for you before seeing your distinctive hair. He caught up to you and his footsteps stopped