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-->''Water in the sky, sky in the water. In the sky of the moon is a shattered sea.''

''Tsuki no Sango'' (lit. "Moon's Coral") is a short story written by Creator/TypeMoon, set in the Franchise/{{Nasuverse}}.

In the year 3000, humanity has advanced, but is losing the will to live. Meanwhile, in an island colony on the moon resides a girl who tells the story of how her ancestor supposedly came to Earth.

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!!Tropes on the moon include:
* AmbiguouslyRelated: The Girl is nicknamed the "Princess" by the other people in the colony, has blonde hair, wears all white, and is associated with the moon, much like Arcueid, the titular Moon Princess of ''VisualNovel/{{Tsukihime}}''. The Girl from the Moon also greatly resembles Arcueid as Archetype-Earth (long blonde hair, red eyes, white dress) and is said to be the manifestation of the Moon's will and mind, much like Arcueid due to being a True Ancestor.
* CloneAngst: The Princess is the latest in a line of clones based on the Girl from the Moon. She considers herself an "ugly duckling" for not being as girlish as her "Mother", "Grandmother", and so on.
* ContinuityNod: The Earth in ''Tsuki no Sango'' is described as "a degenerated world where magecraft yet lingers". This is also what happened to the Earth in ''Literature/AngelNotes''.
* DesignerBabies: A staple of the setting as birth rates have basically completely stopped, with the Man from Earth himself being one. However, most of them were afflicted with CloneDegeneration, with one or all of their five senses notably being deficient: the Man from Earth himself is deaf.
* DistantSequel: The story is officially described as ''"VisualNovel/{{Tsukihime}}'' 3000", although the story [[MultipleChoiceFuture doesn't necessarily take place in the future]] of ''Tsukihime'' and likely doesn't, since the Moon's will manifests differently in both stories.
** ''Tsukihime'' takes place in 1999 (while it was released in 2000), so ''Tsuki no Sango'' takes place about 1001 years later.
* {{Expy}}:
** Sui and Ise, the Princess's twin servants, are ones for Hisui and Kohaku from ''VisualNovel/{{Tsukihime}}'' -- Hisui even has "Sui" in her name.
** The Man from Earth may be one for Shiki Tohno from ''VisualNovel/{{Tsukihime}}'', seeing as he has a tragic romance with Arcueid's expy, the Girl from the Moon, and [[spoiler:he does bare some resemblance to Shiki]].
** The Man from Earth's boss, Section Chief Yuzukura, likewise may be one for Satsuki Yumizuka from ''VisualNovel/{{Tsukihime}}'', at least physically. She also appears to be fond of the Man, similar to Satsuki's affection for Shiki.
* JustBeforeTheEnd: The story is set when humanity has progressed so far that it is losing the will to live and will decline soon. The world has "degenerated" but "magecraft yet lingers", much like in [[Literature/AngelNotes the Land of Steel]].
* TheMagicGoesAway: Magic has grown weak and has a very small presence in the future. As established in other Franchise/{{Nasuverse}} works, as humanity progresses in scientific observations, magecraft will grow weaker because magecraft is literally powered by [[ClapYourHandsIfYouBelieve the mystery of not knowing how the universe works]].
* NamelessNarrative: In the original short story, where every character was only known by their roles: the Storyteller Girl, the Small Person, the Girl of the Moon, and the Man of the Earth. The manga adaptation, which expands the cast significantly, adds actually named characters, like the Princess's servants and the Man of the Earth's colleague. It does still keeps the old pattern for some of the new characters however.
* NeverLearnedToRead: The Princess of the island cannot read or write, at least before the Small Person teaches her.
* WholePlotReference: Nasu has confirmed the story is partially based on ''Literature/TheTaleOfTheBambooCutter''; Like Kaguya, the Princess is a princess from the Moon and she has no interest in her suitors, only willing to marry them if they complete her {{Impossible Task}}s. The Girl from the Moon whom the Princess is cloned from also fell to Earth, like Kaguya.