Parallel Worlds (平行世界, Heikou Sekai?) and Adjacent Worlds (並行世界, Heikou Sekai?) are the set of extant parallel universes.


The primary history of the worlds is called the Greater History of Man (汎人類史, also called Pan-Human History?, localized as Proper Human History), consisting of all worlds that have not been pruned. Worlds that are cut off completely are called Lostbelts.

Although most works share a similar foundation where it could be said that they take place in the same world, there are actually two primary types of worlds, Fate Worlds (Fate世界?) and Tsukihime Worlds (月姫世界?). Fate worlds are based in the "Affirmation of Human History" where Heroic Spirits can be summoned as Servants, and Tsukihime Worlds are based in the "■■■■■■■■ of Human History" where the concept of summoning Heroic Spirits is laughable and where Dead Apostles, the antithesis of Human History, stand at the center of the story. There are worlds that "aren't really either" type of world that do have elements of both for unknown reasons.[1]

Parallel Worlds are normally accessible to others only through the Second Magic; though, in Fate/EXTELLA, Archimedes and Dark Eliza are able to Slide between them by way of a System Administrator privilege granted by SE.RA.PH. Characters of many different settings can interact and gather in Ahnenerbe.

  • The stories of Kara no Kyoukai and Tsukihime were originally considered both to be small happenings in a single world.[2] Afterward, due to slight differences in the ages of certain people and differences in the makeup of certain families, they can be thought of as subtly shifted Parallel Worlds.[3]
  • The world of Notes takes place in an undetermined future where the world dies while humans continue to live on its body, and its current state involves Crimson Moon.
  • The worlds of Fate/stay night and Lord El-Melloi II Case Files are in the same parallel world, El-Melloi Case Files is a dense story of magecraft in exactly the same world, but with a slightly different atmospheric density.[4]
  • The worlds of Fate/stay night and Fate/Zero are different parallel worlds, as revealed in TYPE-MOON Ace Vol. 10. Zero is a world with the same terms as stay night, but subtly different.[4]
  • The world of Fate/strange Fake is a future possibility, called by Zelretch a pseudepigraphon (or perhaps the opposite) that is somehow completely different despite having the same terms and reaching the same conclusion as stay night.[4] It's also a world that has the characteristics of both Fate Worlds and Tsukihime Worlds at the same time.
  • The worlds of Tsukihime, Mahou Tsukai no Yoru, and Clock Tower 2015 exist in the same parallel world, separate from the world of Fate/Grand Order.[5]

Fate/stay night UniverseEdit

The three routes of Fate/stay night can be called Adjacent Worlds existing at the same time in some sense. When asked how the routes would appear to Zelretch, Kinoko Nasu stated that Zelretch observing the routes as parallel would make it "true", and that Nasu would prefer that only one route existed instead.[6]

Fate/kaleid liner PRISMA☆ILLYA UniverseEdit

Fate/kaleid liner PRISMA☆ILLYA has portrayed two existing worlds, there is the "World of Illya" and the "World of Miyu".

  • The "World of Illya" is similar to the world of Fate/stay night and Fate/Zero.
  • The "World of Miyu" is different to the "World of Illya".

Apocrypha UniverseEdit

The world of Fate/Apocrypha is a parallel world to Fate/stay night where the timeline differs during the Third Holy Grail War. Apocrypha is a world that was the same up to a point, but which is now completely different.[4]

Moon Cell Holy Grail War UniverseEdit


World lines of the Fate/EXTRA series

The world of the Moon Cell Holy Grail War shares the same events at that of Fate/stay night up until a certain point until a "certain major incident" in the 1970s that caused the world's mana to start drying up causes it to split off into its own separate universe. As of the 2030s, the world's mana was completely gone.[7]

Tsuki no Sango UniverseEdit

The world of Tsuki no Sango takes place in approximately the year 3000, when humankind arrived at the peak of its civilization, but is losing its will to keep living.

  • It is a world in which the events of Tsukihime didn't take place.[8]
  • Unlike the world of "EXTRA", Tsuki no Sango is a degenerated world where magecraft yet lingers.[8]


  1. The BAMBOO BROOM DIARY - 2017/4/15: Nobunobuno, nobunonobunobu.
  2. Staff Roundtable - The Second Night
    Speaking of Tohno, did you ever think of doing a crossover with 「Kara no Kyoukai」?
    Nasu: No, even though the word rules (special powers/magic) are the same. They're both just small happenings in a single world. That's why the first main character I made is Aoko-san.
  3. 4.0 4.1 4.2 4.3 Fate/strange Fake v.1 Afterword - Commentary Nasu Kinoko
  4. The Bamboo Broom Diary, August 14th - "Clock Tower 2015 is in the world of Tsukihime and Mahou Tsukai no Yoru. In that world, a certain someone XX in order to protect the present, and so the events of FGO don't happen. No one knew about his achievements but he protected both the past and the future.
  5. Fate/EXTRA Visual Fanbook - Page 079
  6. 8.0 8.1

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