Under Night In-Birth Wiki

The Manifestation, more commonly known as EXS(Exist) (顕現(イグジス)), is the source of an In-Birth's power and what Voids seek to consume. It is a form of energy present in all earthly matter, and is described as "the source of all things".

Exist (EXS)

In-Births are capable of using the power of Manifestation to give the EXS stored within their Vessel a unique form of their own, this form is known as an EXS ability; In-Births that possess EXS also have their physical abilities enhanced to a degree, as elaborated by Tsurugi and demonstrated by Chaos, which is likely enough for them to at least manage their powers.

Overuse of EXS abilities or gathering large amounts of EXS within one's Vessel however, can cause an In-Birth to lose themselves and start having their true self replaced by some sort of "alternate self". This alternate self starts to emerge in personality traits such as an increased bloodlust or fits of rage. Soon, these traits completely overwhelm an In-Birth and they begin to transform into a Void, a creature that is driven by instinct to consume EXS and can manifest itself in the presence of large concentrations of it if they are powerful enough.

The Abyss at the center of the Hollow Night produces an endless amount of EXS, attracting Voids as well as In-Births seeking to gain further power, and possibly even the status of a Re-Birth if that's what they so desire.

It would also appear, based on story dialogue, that characters from other universes such as Eltnum and Akatsuki do not require EXS to use their abilities, though they still contain it within their being and are thus, vulnerable to consumption by Voids.

If an In-Birth does not use their abilities for a certain amount of time, their abilities will eventually vanish, turning them back into a regular human.

False (FLS)

The FLS(False) (虚偽(ファルス)) is a power used by Voids and Autonomic Nerves to fuel their abilities. In order to use FLS, a Curse Commandment is required.

Currently, Merkava and Vatista are the only playable characters to make use of FLS rather than EXS. Kuu is also known to use FLS due to his status as a Void.

Known Abilities

Below is a list of all known EXS Abilities and what their purposes are. Please read the articles of their respective wielders for a more in-depth look.

Ability name Ability subtitle Function Wielder
Void Red (ヴォイドレッド) EXS of Darkness (漆黒のEXS) Able to summon and wield the Insulator. Hyde
Speed Star (スピードスター) EXS of Agility (疾駆のEXS) Increased agility. Linne
Hecatoncheir (ヘカトンケイル) EXS of Mountainous Strength (剛力のEXS) Increased muscle mass and strength. Waldstein
Blood Spike (ブラッドスパイク) EXS of Lifeblood (命血のEXS) Grants control over a blood-like substance. Carmine
Thanatos (タナトス) EXS of Purity (純潔のEXS) Grants control over a form of energy that takes the shape of an avatar. Orie
Snatcher (スナッチャー) EXS of Greed (強欲のEXS) The ability to steal and harvest souls. Gordeau
Jormungandr (ヨルムンガンド) FLS of The Basilisk (怪蛇のFLS) The ability to shapeshift. Merkava
Restriction (レストリクション) FLS of Binding (隷約のFLS) Restricts the flow of EXS in the surrounding area. All Autonomic Nerves (Vatista, Radiata and Reflecta).
Kerykeion (ケーリュケイオン) EXS of Excavation (穿鎖のEXS) Temporarily halt the flow of EXS within another's body. Seth
Ainsel Lost (無明長夜(エインセルロスト)) EXS of Falling Flowers (散華のEXS) Increased sense of awareness. Yuzuriha
Unnamed light EXS N/A Manipulation of light. Hilda
Masquerade (闇の衣(「マスカレード」)) N/A Manipulation of darkness. Hilda
Paradox (パラドクス) EXS of Light and Darkness (煌朧のEXS) Merging of Masquerade and another light-based EXS. Hilda
Umbral (アンブラル) EXS of Illusion (肖影のEXS) The ability to create illusory projections based on specific items. Chaos
Windmill (ウインドミル) EXS of Vengeance (旋纏のEXS) Manipulation of the wind. Nanase
Chelicerata (ケリケラータ) EXS of Dark Spikes (闇鉤のEXS) The ability to manifest spider-like webs and consume EXS. Byakuya
Baroque Noise (バロックノイズ) EXS of Resonance (振鳴のEXS) The ability to manipulate sound. Phonon
Diesel (デイ一ゼル) EXS of Drive (激進のEXS) Increased kinetic energy. Mika
Maelstrom (メイルストルム) EXS of Calamity (罪渦のEXS) Merges wielder with a mysterious and powerful vortex. Enkidu
Flame Tyrant (フレイムタイラント) EXS of Incandescence (灼熱のEXS) Manipulation of fire. Wagner
Dare Glacial (デアグラシアル) EXS of Iceflowers (氷華のEXS) Manipulation of cold weather and ice. Londrekia
Analysis (アナライジス) EXS of Precision (精密のEXS) N/A Eltnum
Blitz Motor (電光機関(ブリッツモーター)) EXS of The Thunderclap (迅雷のEXS) A powerful, lightning-based motor. Akatsuki
Unnamed materialization EXS N/A Not exactly specified, but is said to be able to materialize objects, most likely from drawings. Azel
Gate of Hades (冥府の門(ゲート・オブ・ハーデス)) N/A The ability to summon a mysterious gate, which passively releases an empowering and corrosive mist. Ogre
Survivor (サバイバー) N/A Gives a boost in survival instinct and defensive maneuvers. Roger
Sephiroth (生命の樹(「セフィロト」)) N/A Can boost the powers of others and the durability of other materials, as well as control plant life. Strix
Unnamed cloning EXS N/A Grants the ability to clone oneself, as well as manifest emotion-based weaponry. Zohar


Story Information