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The National Astronomical Observatory of Japan is a government run organisation, specializing in information about Contractors.


E15 Hoshimi conneced to observatory

The Stargazer: Hoshimi.

The building also houses the mysterious Stargazer, an old, priestess-like figure called Hoshimi who rarely speaks. When she does say anything, it is usually in the form of prophecies and riddles.[1]

Contractor Monitoring[]

By observing the stars they can tell which Contractor has been involved in any recent incidents, as the Contractor's star twinkles when they use their power.[2]

Doll Surveillance Network[]


Three Dolls connected to the surveillance network.

They also have a number of Dolls for tracking and surveillance purposes. These Dolls are tied in to a network and use the power lines around Tokyo as their medium to observe events and locate targets both outdoors and indoors to some extent. This network is limited, however, as cutting the power lines will block access of the observer spirits to a building or area.[3] The Dolls are referred to by number and are kept face down in liquid filled tube-like metal capsules with glass domes around the head, emitting a green glow. Kanami Ishizaki and the other staff check their health visually as well as by monitors and make adjustments to the liquid as needed, such as increasing the sodium concentration.[4]

Following the closure of the Observatory, the Doll Network is taken over by Section 3.[5]

Part in the Story[]

While often just providing surveillance on missions, the Observatory and its staff are directly involved a handful of incidents throughout Darker than Black: The Black Contractor, namely having the observer apparitions of their Dolls captured by Itzhak,[6] and monitoring the battle between Evening Primrose and the Syndicate, both through tracking several Contractor signatures, and through the Stargazer's prophetic speeches in the final battle.[7]

Some time after the battle, the Observatory is closed down and the building abandoned, with the Doll Network being taken over by Section 3.[8] The Observatory is also the site of the meeting between Misaki Kirihara and Oreille.[9] Misaki later visits the site again, where Genma Shizume finds her and asks her to work together to find out what is going on in Section 3.[8]

Notable Members[]


  1. The Black Contractor, Episode 15
  2. The Black Contractor, Episode 24
  3. The Black Contractor, Episode 10
  4. The Black Contractor, Episode 13
  5. Gemini of the Meteor, Episode 10
  6. The Black Contractor, Episodes 13-14
  7. The Black Contractor, Episodes 24-25
  8. 8.0 8.1 Gemini of the Meteor, Episode 7
  9. Gemini of the Meteor, Episode 5


v · e National Astronomical Observatory of Japan
Members: HoshimiKanami IshizakiŌtsuka Mayu
Related Articles: ContractorsDollsHell's GateNational Astronomical Observatory of JapanPublic Security BureauSaturn Ring

v · e Organizations
Active Organizations: CIAFrench Department Of National SecurityKurusawa Detective AgencyMeyer & HiltonMI-6Public Security BureauRussian IntelligencePANDORASection 3
Status Unknown: Evening PrimroseFraternal Order of the Holy GateQing Long Tang MafiaThe Syndicate
Inactive Organizations: National Astronomical Observatory of Japan