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A Bounded Field (結界, Kekkai?, lit. "Barrier") is a topographic type of Magecraft that consists in knitting a network of magical energy and spreading it on base area, such as a piece of land or a building, to create a mystic boundary line that separates the inside from the outside. By definition, it should not be possible to move them once they are set, but those created by Souren Araya and Sancraid Phahn are an exception to this rule. The most powerful type of Bounded Field makes the space itself act as a boundary line and it is on a level close to Magic.

Mechanics[]

Once constructed, the established boundary line will delimit the range of the powers of the Bounded Field, but it is possible to engrave magic sigils across the interior of the field to expand the area of effect and strengthen it. Removal of the sigils by a third party is possible as long as the technique used to engrave them isn’t too advanced. In this case, it is only possible to temporarily hinder the Bounded Field by dissipating the magical energy used to activate it, but the creator of the Bounded Field can amend this by simply putting more magical energy back into it. In the Fate/stay night anime this was changed to the sigils being easily destroyed. However, new sigils are constructed by the actions of the old ones, making the Bounded Field capable of self-repair in due time.

As their original purpose was for the creation of safe havens, the effects that can be set within a Bounded Field are in their majority those whose aim is to protect the caster. Offensive variants do exist, but as they work through indirect magical interference, their efficiency against those who can protect themselves magically is low.

Advanced Bounded Fields work on a subconscious level to prevent onlookers from noticing it, but placing those on a large area increase the chances of being detected by a trained magus. An ideal Bounded Field is one that cannot be detected by anybody. On the other hand, a Bounded Field that can be easily noticed is seen as the mark of a third-rate magus.[1]

Caster's advanced skill in magecraft allows her to construct an ultimate-bounded field, that is on the same scale as a Reality marble, though the time to prepare such a thing is extreme.[2] It is shown in the Fate/stay night [Unlimited Blade Works] anime as a simple re-creation of the Fuyuki Bridge, with a foggy interior.[3] She used the lingering traces of the previous war's Caster's summoned Horrors to create it.[4] Caster also shows that with more time and effort something similar to "Another world" can be constructed, which she refers to as being a sort of Reality Marble, where she has prepared her own city. Caster even claims the Doll-people inside are "literally" alive, because she takes the time to make each and every one by hand.[5]

False Rider's first Noble Phantasm Doomsday Come creates a Bounded World that takes the form of a pseudo-Underworld with the Master as its origin point.[6]

Examples of Bounded Fields[]

References[]

  1. Fate/stay night - Prologue: Day 3
  2. [v] Comptiq 2007-04 issue - Fate Dojo Q & A:
    Q: Although it did not appear in the works, can Caster use a Reality Marble?

    Q: Although it did not appear in the works, can Caster use a Reality Marble?

    A: Unfortunately, Caster cannot use it. But, if it is a magus of her level of excellence, by precisely constructing small magecraft and large magecraft, she can construct "another world" of the same scale, don't you agree? Well, the time and expenses required for that is vast, after all.

    Q:作中では出てきませんでしたが、キャスターは固有結界を使えますか?(神奈川県/樹根百合香)

    A:残念ながら使えません。が、彼女ほど超絶した魔術師なら、小さな魔術と大きな魔術を緻密に構築していく事で同規模の「異界」を作り上げられる でしょう。まあ、その為にかかる時間と費用はやっぱり莫大なものですが。

  3. Fate/stay night [Unlimited Bladeworks] - Episode 12: "The Final Decision"
  4. Kinoko Nasu Twitter 12:17 PM JST · Dec 27, 2014Flag of Japan.svg - "The mirror world is a polluted world. The bridge has always been a boundary, a sign that separates this world from the other world. In addition, this is a river that was contaminated ten years ago when the evil gods of the other world were summoned. Taking advantage of this, Caster has shifted the entire phase and invited her target in."
  5. Fate/Grand Order - Medea's Interlude: Witch's Backyard
  6. [v] Fate/strange Fake - Volume 6 - Servant status: Rider[T]

    Class: Rider
    Master: Kuruoka Tsubaki
    True Name: Pale Rider
    Sex: The concept does not apply
    Height and Weight: Varies based on infection and diffusion (roughly equivalent to a parvovirus at minimum)
    Alignment: True Neutral

    Strength: E
    Endurance: A
    Agility: B
    Magic: A
    Luck: C
    Noble Phantasm: EX

    Class Skills
    Anti-Magic: C
    Riding: EX

    Personal Skills
    Infection: A
    The ability to expand its territory by infecting other organisms with parts of itself in the form of bacteria or viruses. The minds and bodies of the infected are under Pale Rider’s control, and their minds are drawn into the world created by its Noble Phantasm. Their magical energy may sometimes be absorbed as well.

    Innocent World: EX
    A skill that reflects conceptions produced by human fears of “death” and “pestilence.” Because these conceptions are so varied, Pale Rider is a nondescript entity when it is first summoned and the tendencies of its very being change depending on those it draws into the “underworld” of its Noble Phantasm.

    Guidance of the Underworld: EX
    The ability to grant a variety of blessings to allies that Pale Rider has drawn into the territory that has become an underworld due to its Noble Phantasm. Because Pale Rider is not itself the ruler of the underworld, this skill differs slightly from a certain deity’s “Protection of the Underworld” skill.

    Noble Phantasms
    Doomsday Come: Come, Dark Path, Come
    Rank: EX
    Type: Anti-World Noble Phantasm
    Range: —
    Maximum Targets: —
    A Noble Phantasm that creates a Bounded World that becomes an artificial “underworld” with Pale Rider’s Master as its starting point, which acts as a receptacle for the “deaths” that Pale Rider bestows. Because it is strongly influenced by the Master’s conceptions, it can become an archetypal heaven or hell, but it can also become a space that acts as absolute nothingness and destroys souls. In extreme circumstances, Pale Rider can pull its target’s body into the ward as well as their mind. The ward is typically smaller in scale, but as a result of connecting to the land itself and other factors, Pale Rider is currently creating a larger ward than it would when summoned normally.

    Kagome Kagome: Sword, Famine, Death, Beast
    Rank: A
    Type: Anti-Army Noble Phantasm
    Range: 99
    Maximum Targets: 999
    The ability to manifest and utilize the power of numerous objects that impart “death” to others within Pale Rider’s ward. In an ideal environment, it is also capable of recreating a mythical “doomsday” to the extent that magical energy will permit. It did not reach that level because Tsubaki lacks knowledge of the Apocalypse or Ragnarök and did not wish for a hell. The pronunciation of this Noble Phantasm’s name varies from Master to Master.

    CLASS ライダー
    マスター:繰丘 椿
    真名:ペイルライダー
    性別:その概念は無い
    身長・体重:感染、拡散状況によって変化(最小でパルポウイルスと同程度)
    属性:中立・中庸

    筋力:E
    耐力:A
    敏捷:B
    魔力:A
    幸運:C
    宝具:EX

    クラス別能力:
    対魔力:C
    騎乗:EX

    固有スキル
    感染:A
    細菌やウイルスの形状を取った己の分け身を他の生物に感染させ、己の領域を広げるスキル。感染者は精神と肉体を支配され、精神が宝具によって生み出された世界へと引き込まれる。時に魔力などを吸収されることもある。

    無辜の世界:EX
    「死」や「疫病」に対する人々の恐れが生み出したイメージが色濃く反映されたスキル。イメージがあまりにも雑多な為に召喚時はプレーンな存在になっており、宝具による「冥界」に取り込んだモノによって存在の方向性そのものが変化する。

    冥界の導き:EX
    宝具により冥界化した領域へと引き込んだ者の内、味方に対して様々な加護を与えるスキル。ペイルライダー自身が冥界の王というわけではない為、とある神が持つ【冥界の護り】のスキルとはやや異なる。

    宝具
    来たれ、冥き途よ、来たれ(ドゥームズデイ・カム)
    ランク:EX
    種別:対界宝具
    レンジ:―
    最大捕捉:―
    自らの与えた「死」という結果の受け皿として、マスターを起点として疑似的な「冥界」となる結界世界を造り上げる宝具。緊急時は対象を肉体ごと結界内に引き入れる。
    マスターのイメージに引き摺られる為、典型的な地獄や天国の様になることもあれば、完全なる虚無として魂を砕く空間となる場合もある。 
    本来はもっと小規模であるが、土地そのものやその他の要素と結びついた結果、現在通常召喚時よりも広い結界を造り出している。

    剣、饑饉、死、獣(かごめ、かごめ)
    ランク:A
    種別:対粛清宝具
    レンジ:99
    最大捕捉:999
    己の結界内において他者に「死」を与える数多の物を具現化させ、その力を行使するスキル。環境が完全に整えば、神話における「終末」を魔力が許す範囲でのみ再現することも可能。
    しかし椿が黙示録やラグナロクの知識を有さず、地獄を望まなかった為そのレベルには到らなかった。宝具の読み方はマスターによって変化する。

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