Terminology

Locations

 * Earth
 * Shibuya
 * Akihabara
 * Oblivia
 * Nisagami High
 * Kurai Residence
 * Looking Glass Academy
 * Nightmareland
 * V.I.R.T.U.E Sanctus Armada Academy
 * Central Enoch
 * Eden
 * Kadoane Forest
 * 07's Custom Residence
 * The Kawaii Café
 * DADAF Police Department
 * Carnival of Seasons
 * Castle of Nightmares
 * Castle of Alice
 * Idris
 * Azrael
 * Phantom Desert
 * Sandalphon
 * Leliel
 * Shamayim

Species

 * Oblivions
 * Earthbounds
 * Faithwalkers
 * Allbreeds
 * Soul Splices
 * Angels
 * Valkyries
 * Nephilims / Demi-Angels
 * Messiahs / Demi-Gods
 * God
 * Goddess

Key Weapons

 * Ragnarok / Excalibur
 * Dyrnwyn / Shaddai
 * Nazareth / Nazareth II
 * Jehovah / Anesidora

Key Terms

 * Soulstream
 * Magia
 * Divinity Level
 * Pandora's Box
 * Yggdrasil
 * Mimameidr
 * Vira Cells
 * Blood Mating
 * Blood Donors
 * Blessing Cross
 * Bride's Thread
 * Oblivion Mark
 * Ars Armor
 * Ars Arms
 * Ars Locks
 * God's Eyes
 * Azoth
 * X.I.A.L Virus
 * S.I.Ns
 * Dreamscapes
 * Anomalies
 * Crucible of Souls
 * Sin Arcana

Crucial Historical Figures and Background

 * E.T.A
 * Fallen
 * X.I.A.L
 * Pandora Eve
 * Trinity of Memories
 * Norn
 * Knights of the Round

Teams and Organizations

 * The Nightmares
 * The V.I.R.T.U.E Committee
 * Arms Corps
 * The V.I.R.T.U.E II Army
 * Orphans
 * TR4NCe-ieNT

Key Wars and Battles

 * Heaven Hell War I
 * Heaven Hell War II
 * Attack on Nightmareland
 * Crystal December
 * Ars War