In Majora’s Mask, Link is searching for a friend whom he had to part with after his heroic destiny was fulfilled. Many people consider Navi to be this friend. I disagree fully. I believe the game itself implies that Link was searching for Skull Kid.
Why do I say Skull Kid? The answer can be found by examining Majora’s Mask on its own, and ONLY Majora’s Mask. While some people may examine Ocarina of Time, the Zelda mangas, and Nintendo
of America’s statements, examining Majora’s Mask itself makes sense. Other sources have questionable authority, while the game stands as its own authority. If you’re going to study a form of entertainment, study the product itself instead of relying on other studies to make your point.