The Dragons of Heaven (天の龍, Ten no Ryū), or The Seven Seals (七つの封印, Nanatsu no Fūin), are a group of seven individuals who are fated to stand against the Dragons of Earth in the apocalyptic battle on the Promised Day to determine the fate of the Earth and humanity. The Dragons of Heaven ideologically represent the belief that conflicts between man and nature can and must be resolved peaceably, and that humanity is no less precious than the Earth itself. Each of the Dragons of Heaven has a unique background (usually involving Japanese religious or occult sects), but all of the Dragons of Heaven are united in their desire to protect others. The Dragons of Heaven each exhibit the ability to create Spirit Shields in order to prevent innocent people from being harmed when battle with the Dragons of Earth erupts. It is heavily suggested that when a Dragon of Heaven loses the person or people that they wish to protect, or loses the will to protect others, the Dragon of Heaven concurrently loses their ability to create a Spirit Shield and is no longer considered a Dragon of Heaven. The term "seal" is an allusion to the Book of Revelations, but with a twist instead of seals on a scroll to be broken by the lamb of God, the Seven Seals are to be broken by the Seven Angels.
In Tsubasa: Reservoir Chronicle, their alternate versions exist in Tokyo, an apocalyptic world continually corroded by acidic rain as fighters of the Tower faction, who spar with people of the City Hall faction (alternate versions of the Dragon of Earth) for the scarce pure water left. They are led by the alternate version of Fūma, who is secretly a treasure hunter across dimensions, and Daisuke Saiki replaces Subaru as one of the seven.