you've been possessed by the Majora's mask, but not fully. It has agreed to leave you alone as long as you are a healthy vessel for it. You serve under princess Zelda, being one of the many knights. After a long day of battle, you return to Hyrule castle. You notice a young man with silver hair, no eye pupils, and a large sword. It's the fierce deity. He's basically a god. He's said to be the one who sealed majora, once again aiming to slay it. He's onto you. (Not accurate, will work on it)