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 but are artificially sustained beyond the point at which they would be pruned 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 and Miyamoto Musashi has an unusual condition in which she involuntarily "jumps" between worlds at random. Other, more exotic means of traveling between Parallel Worlds such as Rayshifting and the Zero Sail also exist, and the Moon Cell seems to have at least a limited ability to deploy its agents to Parallel Worlds if necessary (as was the case with BB). However, these alternate means are far more limited in the number of Parallel Worlds they can access and require special protocols to be performed safely. 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 world of Fate/Grand Order is said to be from a different but closely related parallel world.
  • 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)[5] 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.[6]
  • The world of Fate/type Redline is not directly connected to any other Fate works.[7] In this world there were Holy Grail Wars conducted in Imperial Capital Tokyo of the Empire of Japan in concurrent with World War II. The Grail War held in Shōwa 20 (1945 A.D.) ends with the event on May 8 with an explosion erupting over the Imperial Capital causing the death of about 200,000 citizens and the land gouged that would be filled in with the sea.

Fate/stay night Universe[]

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.[8]

Fate/kaleid liner PRISMA☆ILLYA Universe[]

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 Universe[]

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 Universe[]

Main article: World of Fate/EX

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.[9]

Tsuki no Sango Universe[]

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.[10]
  • Unlike the world of "EXTRA", Tsuki no Sango is a degenerated world where magecraft yet lingers.[10]


  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. [v] December of 2001

    It's the first post on the spoiler boards!
    I'm asking this here since it's a bit of a spoiler.
    The complete edition of Kara no Kyōkai coming out at the winter comiket is going to have errors corrected,
    but does that include changes to the setting as well?
    (For example, in Tsukihime the succession of the Fujou main family is done through the passing down of techniques,
    while in Kyōkai it is determined by blood.)

    I'll answer that!
    Regarding the Fujou, the setting isn't quite the same.
    Though Rakkyo and Tsukihime have a lot of points in common, there are a few tiny differences in the details.
    One of those is the Fujou. In reality they're actually ESP users like the Asagami, Ryougi, and Nanaya. But in Rakkyo they are a magi lineage.
    Other than that... oh, right, there's Aoko's age. If Rakkyo and Tsukihime were the same world then Aoko would only be a little bit older than Tohno Shiki. The Aoko in Rakkyo has not yet gained the title of "Miss Blue", and is still training in Misaki Town.
    It's probably best to think of it as subtly shifted parallel worlds.


    その一つが巫浄。実際、浅神、両儀、七夜は超能力に類する物ですが、「らっきょ」の巫浄は魔術師の家系です から。
    他には……そうですねー、青子の年齢とか。「月姫」と「らっきょ」がまったく同じ世界だとすると、青子って 志貴よりちょい年上なだけになってしまいます。「らっきょ」での青子さんはまだミス・ブルーなんて呼ばれて おらず、三咲町で修行中だったり。

  4. 4.0 4.1 4.2 4.3 Fate/strange Fake Volume 1 - Afterword: Nasu Kinoko's Commentary
  5. Fate/strange Fake Volume 1 - Extra Chapter: Observer. Or, Character Creation translation, p.187-193
  6. The Bamboo Broom Diary, August 14th, 2015 - "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.
  7. Keikenchi Twitter 2:16 PM JST · Dec 10, 2019Flag of Japan.svg
  8. [v] Fate/complete material III: World material - FAQ with Nasu: Miscellaneous, p.136

    Q: Are the three routes of "Fate/stay night" parallel worlds existing at the same time? I was curious since I was how it would look to Zelretch.

    Q: Are the three routes of "Fate/stay night" parallel worlds existing at the same time? I was curious since I was how it would look to Zelretch.

    A: They're parallel... sort of. But if Zelretch was observing, it'd become true, and my feelings on the matter is that I'd rather two routes disappear if one was true.
    If all of these became possible at the same time, the other routes would become meaningless.

    Q:「Fate/stay night」の3ルートで、同時に存在する並行世界なのでしょうか?ゼルレッチが見ていたら、こんな感じに見えるのかと思いましたので。


  9. Fate/EXTRA Visual Fanbook - Page 079
  10. 10.0 10.1
    [v] TYPE-MOON Fes. Official Pamphlet 10th Anniversary Q & A Booklet:

    Q: The concept of Tsuki no Sango is the "degenerated what if scenario" of Tsukihime 3000, but is Tsuki no Sango a potential future of Tsukihime universe?

    Q: The concept of Tsuki no Sango is the "degenerated what if scenario" of Tsukihime 3000, but is Tsuki no Sango a potential future of Tsukihime universe?

    A: Tsuki no Sango is a world where the event of Tsukihime did not occur. Different from EXTRA's "what if" scenario, the one of Tsuki no Sango is "a degenerated world where magecraft yet lingers". Tsuki no Sango has a Land of Steel type of world.

    Q:月の珊瑚の裏コンセプトが「月姫3000」で『退廃的なイフ』とされていますか、月の珊瑚は月姫世界 の未来の可能性の一つなんでしょうか?

    A:「月姫」が起きなかった世界というか。でもエクストラのイフとも違う、「魔術残ってたけど退廃的な世 界」という扱いで一つ。「月の珊瑚」はどっちかっていうと鋼の大地系です。