Ultraman Zero: The Cosmic Phantom

After drifting through the universe for who knows how long, transmigrating from one world to another, this ghost from his own universe witnesses the growth of his sense of justice alongside his partner Zero in the Ultra Universe. He also fights for the future of his universe...

The protagonist is a ghost, a dead man who was once an ordinary person living in an infinite universe. But even infinity can come to an end. Merged with his own universe, he wanders aimlessly through the vastness of space, searching for a way to restore it. The passage of time wears away at his humanity. As he searches for justice, he also seeks the spark of humanity that belongs to him.

Zero needs the Shield of Baraji to travel between worlds, so the earlier story follows his usual adventures. Later, he will journey through various worlds according to the protagonist's abilities and Zero's growth and uncertainty.