Movie
Description
Phantom Thief U is a master thief and the most prominent rival of the detective Oshiri Tantei in the animated film Eiga Oshiri Tantei: Star and Moon. He is a mysterious figure whose real name and complete face are never revealed, and the film deliberately deepens his mystery while also revealing more about his past than any earlier installment.

His background is tied closely to the film's central object, the Moonlight Stone. The stone originally belonged to him before it was taken by Phantom Thief G, the head of the international criminal organization known as the Phantom Thief Academy. The film shows brief glimpses of U's childhood and suggests he was raised in an unusual environment. He is depicted arriving on Earth and speaks of one day going to the moon, so his origins carry a quiet, otherworldly quality that the story never fully explains. In the glimpses of his uncovered face, he appears as a young man with long hair and golden eyes.

U's personality is that of a gentleman thief. He is stylish, theatrical, eloquent, and composed, carrying out his crimes with elegance and showmanship rather than violence. He is not portrayed as an ordinary villain. The film clarifies that he acts according to his own beliefs, and his decision to steal is rooted in purpose and principle. He is highly intelligent, observant, and skilled at reading situations, and he carries himself with a suave, slightly theatrical manner. His characteristic outfit includes a black mask and a cape decorated with a rose pattern.

His motivation in the story is to recover the Moonlight Stone. More than a simple treasure, the stone is connected to his past and to something personal he is determined to reclaim, which gives his mission an emotional weight beyond a typical heist. His actions also place him in opposition to the Phantom Thief Academy and its secret conspiracy, which the film calls the Dark Age Plan.

In the story, U's path runs alongside the main case. While Oshiri Tantei goes undercover on Stardust Island to investigate a disappearance, U infiltrates the Academy's underground headquarters to retrieve the Moonlight Stone. Because their goals align against the same enemy, the longtime rivals agree to cooperate temporarily. The parallel structure of the film gives U nearly equal importance to the detective, and the two work together in scenes marked by unspoken coordination.

His most important relationship is with Oshiri Tantei. They are rivals who acknowledge and respect each other, and the film shows their dynamic shifting from confrontation to alliance. Their partnership is one of the central draws of the story. His other key relationship is with Phantom Thief G, the leader of the Academy, who took the Moonlight Stone from him; G stands as both a personal and narrative antagonist whose schemes U is determined to stop.

In terms of development, the film adds a new layer to U by portraying his childhood and clarifying what drives him. His identity remains hidden, but he becomes a more sympathetic and understandable figure as the reasons behind his thievery come into focus. The story reinforces that he is not a simple criminal but a thief with a code, a past, and a promise he is trying to honor.

His notable abilities include masterful disguise and the skill to plan and execute elaborate, stylish thefts. He is a genius at misdirection and trickery, blends smoothly into different roles, and makes his escapes with a flair as distinctive as his heists. These talents allow him to move through guarded locations, outmaneuver pursuers, and stand as an equal to a detective known for solving difficult cases.