Eternity Swords

Eien Shinken (永遠神剣), Eternity Sword, lit. - Eternal Divine Sword) are sentient weapons that broke from a single Eternity Sword, Aeon, the moment everything in the Universe came into being. The true origin of these weapons are a mystery to even most Eternals, mainly to those who don't know the truth behind the cosmology of the cosmos.

Rank
All Eternity Swords have a specific Rank that they belong to, with those Ranks going from Rank 0 to Rank 9, from Rank 0 being the strongest to Rank 9 being the weakest. The stronger the Eternity Sword, the greater their will, leading most Eternity Swords from Rank 4 and above to have their own established personality, whereas Eternity Swords of Ranks 5 and below tend to be more comparable to "blades that run off instinct," as Yuuto's "Wisdom" describes his previous Eternity Sword of Rank 4, "Desire."

While the gap between Ranks 5 to 9 are not extreme, this is not the case for Eternity Swords from Ranks 4 to 0 -- their gap is astronomically large in comparison, although these rankings are purely denoted by the pure power that they possess. It is still capable for a Rank 3 Eternity Sword to best a Rank 2 Eternity Sword, however the chances of such border upon their wielder's experience entirely. Entities that obtain Eternity Swords from Ranks 3 to 1 are "eligible" to become beings of practically unlimited power dubbed "Eternals."

Name
Every Eternity Sword has a name that they know of at Birth, different from their wielder's name. Eternity Swords Ranks 4 and above tend to have a name that harbors over an abstract concept, such as Yuuto's "Wisdom," or Shun's "World."

Ownership
Those in possession of Eternity Swords normally are so for differing reasons. Most of the time, a "Contract" is formed between the Wielder and Sword, such as Yuuto and "Desire." However, there is also the case of an Eternity Sword simply overtaking one's mind and body, such as Shun's "Oath." Aside from this method, the only other way to have an Eternity Sword is to have been a god in one's previous life. Examples of this are in Seinarukana, with some of the main characters, such as Nozomu and Nozomi, being reincarnations of gods of another world.

Abilities
All Eternity Swords have the ability to manipulate Mana, the fundamental energy that is, for all intents and purposes, the life of a planet. That aside, they generally vary in what specific element(s) or abilities that they have. For Example, Kouin's "Karma" cannot manipulate any element, however it boosts Kouin's inherent abilities to an unsettling degree, whereas others, such as Tokimi's "Prophecy" allows her to see and manipulate Time itself, and Rogas' "Fate" allows him to know the Fate of all things.

Divine Guardian Beast
Shugo Shinjuu, (守護神獣), - The avatar of an Eternity Sword's will. Rank 3 and higher can manifest a physical form that represents the will. Although, within the Time Tree, it's apparently possible for Eternity Swords Ranks 4-6 to physically manifest them if their owners are/were a god.

Form
Despite having the name "Eternity Sword," these swords do not have to come in the shape of weaponry. Some of them come in the shapes of rings or whips. Generally, Eternity Swords look like and are, for all practical reasons, Swords, although exceptions certainly exist.

List
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 * 0 (Unranked)
 * Aeon
 * Primordial Sword
 * Law
 * 天位
 * 0 (Unranked)
 * Eigou (Eternity)
 * [Asleep in Aselia's Eien]
 * 天位
 * 0 (Unranked)
 * Setsuna (Instant)
 * 地位
 * 0 (Unranked)
 * Chouritsu (Tuning?)
 * Amphonse the Cosmic Balancer (previously)
 * [Asleep in Euphoria's Yuukyuu]
 * 鞘 (Sheath)
 * 0 (Unranked)
 * Holy Majesty
 * Time Tree
 * Time Tree prison for Murakumo
 * 1st
 * Murakumo (Heaven's Cloud)
 * Nozomu the Heaven-Crowned, Bearer of Heaven's Cloud and Null High Eternal
 * 0 (Unranked)
 * Chouritsu (Tuning?)
 * Amphonse the Cosmic Balancer (previously)
 * [Asleep in Euphoria's Yuukyuu]
 * 鞘 (Sheath)
 * 0 (Unranked)
 * Holy Majesty
 * Time Tree
 * Time Tree prison for Murakumo
 * 1st
 * Murakumo (Heaven's Cloud)
 * Nozomu the Heaven-Crowned, Bearer of Heaven's Cloud and Null High Eternal
 * Time Tree
 * Time Tree prison for Murakumo
 * 1st
 * Murakumo (Heaven's Cloud)
 * Nozomu the Heaven-Crowned, Bearer of Heaven's Cloud and Null High Eternal
 * 1st
 * Murakumo (Heaven's Cloud)
 * Nozomu the Heaven-Crowned, Bearer of Heaven's Cloud and Null High Eternal

Seraph St. Reime, Ikaruga Satsuki, and Narukana
 * Sword
 * Independent
 * 地位 (Null + Mana)
 * 1st
 * Murakumo (Heaven's Cloud)
 * Nozomu of Murakumo Satsuki of Murakumo
 * Nozomu of Murakumo Satsuki of Murakumo


 * Seraph St. Reime, Centatur Keiron

Narukana

転生と誕生の翼, Sword(s) [Essence was split as part of imprisonment]

Time Tree prison for Murakumo's Null mana? Current form: two shining bracelets (using the shattered Kuukyo as a container), one on each wrist, but form is not fixed thus Kyouko can manipulate it at will.
 * Independent
 * 地位 (Null + Mana)
 * 1st
 * Shukumei (Destiny)
 * Myuugii, The Girl Who Lost Everything to Destiny
 * Ring
 * Law
 * 天位
 * 1st
 * Unmei (Fate)
 * Rogas, The Boy Who Knows the Fate of All
 * Sabre
 * Chaos
 * 天位
 * 1st
 * 聖威 (Holy Majesty?)
 * Gigantic double-edged sword
 * 天位
 * 1st
 * 聖威 (Holy Majesty?)
 * Gigantic double-edged sword
 * Gigantic double-edged sword
 * Gigantic double-edged sword
 * Gigantic double-edged sword
 * 地位
 * 2nd
 * Seiken (Great Sage)
 * Yuuto the Sage
 * Wide one-handed sword
 * Chaos
 * 天位
 * 2rd
 * Saisei (Rebirth)
 * Oruphaliru the Flame of Rebirth
 * Twin bladed tapered sword
 * Chaos
 * 天位
 * 2rd
 * Tokigyaku 時逆
 * Tokimi the Composer of Time
 * Chaos and Izumo
 * 地位
 * 2rd
 * Tankyuu (Quest)
 * 知識の呑竜ルシィマ
 * Enormous spear as a double-bladed sword with a middle hilt
 * Chaos
 * 天位
 * 2rd
 * Daraku (Corruption)
 * Vendetta of Corruption
 * Scythe
 * Chaos
 * 天位
 * 2rd
 * 縁思
 * 縁思のユキナ
 * Piko Piko Hammer
 * Chaos
 * 天位
 * 2nd
 * Kokuu (Emptiness)
 * Tokuo the Diffusion of Emptiness
 * Long handle axe
 * Law
 * 天位
 * 2nd
 * Chitsujo (Order)
 * Pontiff Temuorin
 * Cane
 * Law
 * 天位
 * 2nd
 * Sekai (World)
 * Shun the Ruling Sword
 * Wings of six floating blades, left arm gauntlet with integrated blade, and large double-edged sword
 * Law
 * 天位
 * 2nd
 * Mugen (Infinite)
 * Bobo the Observer of Samsara
 * Half of his body
 * Law
 * 天位
 * 2nd
 * Yurushi (Forgiveness)
 * 最後の聖母イャガ(赦しのイャガ)／ナル・イャガ
 * パララルネクス／ナル化存在
 * Tantou
 * Law
 * 天位
 * 2nd
 * Satori (Enlightenment)
 * Shigei of Enlightenment
 * His body embodies Satori
 * Law
 * 天位
 * 2nd
 * Negai (Wish)
 * Yafasu the Bystander of Dreams
 * Cane
 * Independent
 * 天位
 * 2nd (?)
 * ? (Absolution)
 * Yaga the Absolver
 * Paralarnex (flavor text in attack; not seen?)
 * Knife (Can transform into hammer?)
 * 2rd
 * Hoshitakashi (Heaven's Star)
 * Et Ca Repha the Heaven's Star
 * Single-edged
 * 地位
 * 2rd
 * 紡ぎ
 * 天位
 * 2rd
 * Hinata
 * ヘリデアルツ
 * Twin paired swords of white and black
 * Law
 * 3rd
 * Eien (Eternity)
 * Aselia the Eternal
 * Long-hilted long sword
 * Chaos
 * 天位
 * 3rd
 * Seiryoku (Green Saint)
 * Esperia the Green Saint
 * Spear
 * Chaos
 * 天位
 * 3rd
 * Shinen (Profound)
 * Uruka the Profound Wings
 * Katana
 * Chaos
 * 天位
 * 3rd
 * Yuukyuu (Perpetuity/Aevum)
 * Euphoria the Everlasting
 * Blue Entity & Photon Desire The Twin Dragons
 * Rod with a two curved-in metal tip that spread apart, creating a long and wide blade of light.
 * Chaos → Law
 * 天位
 * 3rd
 * Izon (Reliance)
 * Kyouko of the Violet Lightning
 * Original form: unknown. Broken form: tiny fly-like violet light.
 * 天位
 * 2rd
 * Hinata
 * ヘリデアルツ
 * Twin paired swords of white and black
 * Law
 * 3rd
 * Eien (Eternity)
 * Aselia the Eternal
 * Long-hilted long sword
 * Chaos
 * 天位
 * 3rd
 * Seiryoku (Green Saint)
 * Esperia the Green Saint
 * Spear
 * Chaos
 * 天位
 * 3rd
 * Shinen (Profound)
 * Uruka the Profound Wings
 * Katana
 * Chaos
 * 天位
 * 3rd
 * Yuukyuu (Perpetuity/Aevum)
 * Euphoria the Everlasting
 * Blue Entity & Photon Desire The Twin Dragons
 * Rod with a two curved-in metal tip that spread apart, creating a long and wide blade of light.
 * Chaos → Law
 * 天位
 * 3rd
 * Izon (Reliance)
 * Kyouko of the Violet Lightning
 * Original form: unknown. Broken form: tiny fly-like violet light.
 * 3rd
 * Yuukyuu (Perpetuity/Aevum)
 * Euphoria the Everlasting
 * Blue Entity & Photon Desire The Twin Dragons
 * Rod with a two curved-in metal tip that spread apart, creating a long and wide blade of light.
 * Chaos → Law
 * 天位
 * 3rd
 * Izon (Reliance)
 * Kyouko of the Violet Lightning
 * Original form: unknown. Broken form: tiny fly-like violet light.
 * Kyouko of the Violet Lightning
 * Original form: unknown. Broken form: tiny fly-like violet light.
 * Original form: unknown. Broken form: tiny fly-like violet light.
 * Chaos
 * 地位
 * 3rd
 * Tokiyomi (Prophecy)
 * Tokimi the Composer of Time
 * Double-edged dagger
 * Chaos
 * 地位
 * 3rd
 * Tokihate (Finality)
 * Tokimi the Composer of Time
 * Chouken
 * Chaos
 * 地位
 * 3rd
 * Hakai (Destruction)
 * Paurikosuka the Guidance of Destruction
 * Every bone in her body is composed of Hakai
 * Chaos
 * 天位
 * 3rd
 * Muga (Altruism)
 * Takios the Black Blade
 * Large single-edged sword
 * Law
 * 天位
 * 3rd
 * Ruten (Vicissitude)
 * Medario the Twin Swords of Suigetsu
 * Left and right swords that act as a pair.
 * Law
 * 天位
 * 3rd
 * Fujou (Defilement)
 * Mitosemaru the Defilement
 * Whip
 * Law
 * 天位
 * 3rd
 * Honoo Mikado (Flame Emperor)
 * Ntushitora the Hellfire
 * Stored inside its body thus unknown
 * Law
 * 天位
 * 3rd
 * Kihebi (Strange Snake)
 * 奇なる蛇神ミカゲ
 * Law
 * 天位
 * 3rd
 * Gekiretsu (Fury/Violent)
 * Origin Unstoppable Force
 * Integrated into arms, claws, and tusk
 * Time Tree Root Guardian
 * 3rd
 * Imashime (Admonition/Commandment)
 * Origin Absolute Law
 * Integrated into the eyes
 * Time Tree Root Guardian
 * 4th
 * Motome (Request)
 * Takamine Yuuto
 * Wide one-handed sword
 * Rakios
 * 天位
 * 4th
 * Eiyou (Splendor)
 * Etle Gabana the Sovereign God
 * Ruin's Finger The Avatar
 * Orb
 * Sephirot/Ideal Trunk God
 * 4th
 * Denshou (Lore)
 * Edega Emple the Sovereign God
 * Almighty Perser The Titan
 * Staff
 * Sephirot/Ideal Trunk God
 * 4th
 * Risou (Ideal)
 * Io Whitespirit
 * Rakios
 * 4th
 * Kakon
 * 再構成されたイオ
 * Rakios → Garo Rikyua
 * 4th
 * Kakon (Root of Evil)
 * 剣聖ミュラー・セフィス
 * Marorigan
 * 4th
 * Kuugeki
 * Surudo
 * Double-edged sword
 * 5th
 * Inga (Karma)
 * Midori Kouin
 * Large double-bladed sword
 * Marorigan → Rakios → Garo Rikyua
 * 天位
 * 5th
 * Chikai (Oath)
 * Akitsuki Shun
 * Single-edged sword
 * Sargios
 * 天位
 * 5th
 * Reimei (Aurora/White Dawn)
 * Setoki Nozomu
 * Reime The Angel
 * Pair of double-edged long swords
 * 地位
 * 5th
 * Gyouten (Silver Daybreak)
 * Akatsuki Zetsu
 * Nanashi The Fallen Angel
 * Katana
 * 地位
 * 5th
 * Egen (Insight/Perception)
 * Salles Cworcs (Qwarks)
 * Wise Titan The Treant
 * Book
 * Brigade
 * 5th
 * ぎ
 * 紡ぎのロティ
 * Hilt (beam saber)
 * Garo Rikyua
 * 天位
 * 5th
 * Kuukyo (Emptiness)
 * Misaki Kyouko
 * Rapier
 * Marorigan → Rakios
 * 天位
 * 5th
 * Ryuushou (Dragon Flight)
 * Christopher Tangram
 * Pair of katanas
 * 6th
 * Kouki (Brilliance)
 * Ikaruga Satsuki
 * Cheiron The Centaur
 * Mass of light shaped (usually) as a sword and shield
 * Brigade
 * 6th
 * Seijou (Pristinity/Cleanness)
 * Nagamine Nozomi
 * Monobe The Wander Whale
 * Single-sided sickle spear
 * Brigade
 * 6th
 * Shinshin (Soul/Mind Defender)
 * Katima Aigias
 * Aigias The Horror Elemental
 * Large two-handed backsword
 * Aigias → Brigade
 * 6th
 * Youran (Wellspring/Cradle)
 * Ruputna
 * Sea God (Wadatsumi) The Leviathan
 * Shoes
 * Spirit World → Brigade
 * 地位
 * 6th
 * Muku (Purity)
 * Naya Tatca Nanafe
 * Crowlance The Sorcery Engine
 * Morning star
 * Brigade
 * 6th
 * Shippuu (Gale)
 * Thalia
 * Drifting Foam The Jellyfish
 * Halberd
 * Brigade
 * 6th
 * Koujin (War God/Rowdy)
 * Sorluska
 * Black Fang The Wolf
 * Claw weapon on each wrist
 * Brigade
 * 6th
 * Soukyuu (Blue Sky/Azure)
 * Subaru Seraphca
 * Sparth The Griffon
 * Bow
 * Future World → Brigade
 * 6th
 * Yugou (Redeemer/Healing)
 * Jatzieta
 * Barasteda Ignis The (Red) Dragon
 * Marorigan → Rakios
 * 天位
 * 5th
 * Ryuushou (Dragon Flight)
 * Christopher Tangram
 * Pair of katanas
 * 6th
 * Kouki (Brilliance)
 * Ikaruga Satsuki
 * Cheiron The Centaur
 * Mass of light shaped (usually) as a sword and shield
 * Brigade
 * 6th
 * Seijou (Pristinity/Cleanness)
 * Nagamine Nozomi
 * Monobe The Wander Whale
 * Single-sided sickle spear
 * Brigade
 * 6th
 * Shinshin (Soul/Mind Defender)
 * Katima Aigias
 * Aigias The Horror Elemental
 * Large two-handed backsword
 * Aigias → Brigade
 * 6th
 * Youran (Wellspring/Cradle)
 * Ruputna
 * Sea God (Wadatsumi) The Leviathan
 * Shoes
 * Spirit World → Brigade
 * 地位
 * 6th
 * Muku (Purity)
 * Naya Tatca Nanafe
 * Crowlance The Sorcery Engine
 * Morning star
 * Brigade
 * 6th
 * Shippuu (Gale)
 * Thalia
 * Drifting Foam The Jellyfish
 * Halberd
 * Brigade
 * 6th
 * Koujin (War God/Rowdy)
 * Sorluska
 * Black Fang The Wolf
 * Claw weapon on each wrist
 * Brigade
 * 6th
 * Soukyuu (Blue Sky/Azure)
 * Subaru Seraphca
 * Sparth The Griffon
 * Bow
 * Future World → Brigade
 * 6th
 * Yugou (Redeemer/Healing)
 * Jatzieta
 * Barasteda Ignis The (Red) Dragon
 * 6th
 * Koujin (War God/Rowdy)
 * Sorluska
 * Black Fang The Wolf
 * Claw weapon on each wrist
 * Brigade
 * 6th
 * Soukyuu (Blue Sky/Azure)
 * Subaru Seraphca
 * Sparth The Griffon
 * Bow
 * Future World → Brigade
 * 6th
 * Yugou (Redeemer/Healing)
 * Jatzieta
 * Barasteda Ignis The (Red) Dragon
 * 6th
 * Yugou (Redeemer/Healing)
 * Jatzieta
 * Barasteda Ignis The (Red) Dragon
 * Lantern
 * Brigade
 * 6th
 * Yorushoku (Nightshine/Dim Light)
 * Drav Urza
 * Lestores The Elemental
 * Large two-handed single-edged sword
 * Grun Dras → Lightbringers
 * 6th
 * Raika (Thunderbolt)
 * Evolia
 * Gims The Golem
 * Pair of matching wrist bangles
 * Lightbringers
 * 6th (4th?)
 * Juuatsu (Oppresion/Pressure)
 * Berbalzerd
 * Tyrant Galeopalus The (Wingless) Dragon
 * Halberd
 * Lightbringers
 * 6th
 * Kutagukoori (Icy Dread/Narrow Mind)
 * Shou Epirma
 * Blood Thirst The Bat
 * Bow
 * Future World → Lightbringers
 * 6th
 * Kousoku (Restraint)
 * Uruka Blackspirit
 * Katana
 * Sargios
 * 天位
 * 6th
 * Myouga (Blessing)
 * Uruka Blackspirit
 * Katana
 * Rakios
 * 地位
 * 7th
 * Sonzai (Existence)
 * Aselia Bluespirit
 * Long hilted long sword
 * Rakios
 * 天位
 * 7th
 * Kenshin (Devotion)
 * Esperia Greenspirit
 * Halberd
 * Rakios
 * 天位
 * 8th
 * Rinen (Idea)
 * Oruphaliru Redspirit
 * Twin bladed tapered sword
 * Rakios
 * 天位
 * 9th
 * Shitsubou (Despair/Disappointment)
 * Helion BlackSpirit
 * Katana
 * Rakios → Garo Rikyua
 * 天位
 * }
 * Halberd
 * Rakios
 * 天位
 * 8th
 * Rinen (Idea)
 * Oruphaliru Redspirit
 * Twin bladed tapered sword
 * Rakios
 * 天位
 * 9th
 * Shitsubou (Despair/Disappointment)
 * Helion BlackSpirit
 * Katana
 * Rakios → Garo Rikyua
 * 天位
 * }
 * Katana
 * Rakios → Garo Rikyua
 * 天位
 * }
 * }