Hollow Night (Voids.) is a mysterious realm that manifests once a month. It is home to the
"Those who get their souls devoured by the Dark Shadows, will end up wandering eternally in a mysterious world.", is the rumor that's being told around the city.
Hollow Night appears every time on the night of the full moon at a certain area. Those people who are within the area during the Hollow Night's appearance enter to the Void's realm. Normal people who end up getting caught in the Hollow Night usually become the Void's prey, only some awaken as In-Birth.
People outside the realm of Hollow Night cannot see what happens within. Likewise, the people within the Hollow Night cannot view what happens in the real world. All electrical devices are also rendered useless within the Hollow Night.
Due to the endless amount of EXS it produces, it allows to Voids to take a materialized form near it, so that people can visually recognize them.
Hollow Night can be forcibly ended by destroying the Abyss.
Gloom of Lament
Gloom of Lament (), which is also referred as "Gloomy" (グルーミー) is phenomena similar to the Hollow Night.
"Gloomy" takes place irregularly and can appear without any warning sings. Chaos refers to them as Quickie or "QKY" as way to shorten the words from "Suddenly Appearing Hollow Night" ( ). It is a Night with much thicker and stronger EXS which takes an appearance of a red fog. Getting close to the Abyss of such a night is what turned Roger into a Void.
|Playable Characters||Hyde · Linne · Waldstein · Carmine · Orie · Gordeau · Merkava · Vatista · Seth · Yuzuriha · Hilda · Chaos · Nanase · Byakuya · Phonon · Mika · Enkidu · Wagner|
|Non-Playable Characters||Adelheit · Azel · Chiharu · Chitose · Hiroha · Hollow God · Joker · Kaguya Seikaiguu · Komatsu · Kuon · Kuu · Lex Bartholomeus · Londrekia Light · Murayama · Ogre · Radiata · Reflecta· Roger · Sakurai · Silvaria · Strix · Tomomi · Tsukuyomi· Tsurugi · Uzuki · Zohar|
|Guest Characters||Eltnum · Akatsuki|
|Organizations||Night Blade · Licht Kreis · Amnesia · EFG · Demon Society · Ritter Schild|
|Terminology||Abyss · Autonomic Nerve · Curse Commandment · EXS · FLS · Hollow Night · Immortalize · In-Birth · Indulgence Weapons · Kanzakai · Re-Birth · Secret Arts · Vessel · Void · Void Red · Zero Vessel|