The Door is a mysterious gate that appears in the Yu-Gi-Oh! ZEXAL series. The door hold Astral and Numbers. It haunted Yuma Tsukumo in his dreams for some time causing him to have the same dream almost every night. In that dream, Yuma meets the door and a voice says; "Whoever opens this door will obtain a new power, but will lose what they appreciate the most.", but the dream always ends before Yuma can do anything.

Anime Anime • Special Episode:- 1
Manga Manga (Chapters · Characters) • Spin-off manga
Episodes Season 1Season 2
Ablities NumberCrestPhoton TransformationZEXAL
Items The Emperor's KeyDuel AnchorHeart PieceBarian CrystalThe Door
Devices Photon HandSphere FieldDuel GazerDuel CoasterD-PadAugmented Reality DuelBarian Sphere Cube
Groups Number HuntersNumber HoldersVetrix FamilyFallguysSuper Secret Number Cards Investigation (Numbers Club)Seven Barian LordsIkebana ClubManga Research Club
Others World Duel CarnivalChaos Xyz EvolutionNational Duel CircuitOrbitalSpeed DuelStatue DuelVegetable Death MatchAstral WorldBarian World