Ancient War

The Ancient War, also referred by the later generations as the war of God-slaying (神殺し, Kamigoroshi, lit. "Deicide"), is a war between the Crimson God of Creation, the Snake of the Festival's faction consisting of his Servants and dozens of Crimson Denizens, and the Ancient Flame Haze. It was the God of Creation's first attempt to create a world for Crimson Denizens in human world.

Background

The Cause of War

In ancient times, about three thousand years ago, a Crimson God known as the Snake of the Festival received many prayers from Crimson Denizens to create a world for them to live in. He woke up from his sleep to answer those prayers by enacting a ritual to build a world of paradise, which was later called the Great Binding Chain, for all Crimson Denizen to live in. He chose a certain place in China to perform the ritual. There were dozens of Crimson Denizen who attended the ritual including Ōnamuchi and Illuyanka. The process required a massive amount of Power of Existence to do so; the Snake of the Festival ordered a human lord to gather humans and priests to perform the "sacred" ritual. This plan caught the attention of the ancient Flame Haze and they started gathering at the ritual ground. The God of Creation, fueled with joy of granting wishes, innocently invited the Flame Haze to watch the ritual too, but he did not realized the counterplan they secretly hid.

During War

The ancient Flame Haze, including "Weaver of Coffins" Tis, Khamsin Nbh'w, Nam, NorthAir, the Singer Who Disperses Darkness, the first contractors of Valac and Takemikazuchi intercepted and disturbed the ritual. They devised a plan to corrupt the process and once and for all banish the Crimson God forever; this method is later called the Eternal Pitfall.

The created massive distortion backfired upon the body of Snake of the Festival and sealed him inside the rift between two worlds, the Rift Between Both Worlds, together with some ancient Flame Haze; Khamsin's best friend, the Singer Who Disperses Darkness along with his contracted Crimson Lord and Nam was sent to the Rift Between Both Worlds; In Nam's case, only her will was sent to the Rift Between Both Worlds, leaving her body behind with the Flame Haze's contract still intact.

After the plan succeeded, the Flame Haze were pushed back and many were killed by the enraged Trinity and fellow Crimson Denizens and Lords who retaliated. The Lightning Swordsman and the Princess Who Loves Insects were presumably killed in the battle. Tis and NorthAir barely succeeded in escorting the surviving Flame Haze out of the battlefield. The weary Khamsin was ambushed by Crimson Denizen assassins sent by his nemesis, the Monster, but he survived and continued to pursue it.

In the moment her master was exiled, Bel-Peol took out her right eye and sent it to him. 

Post War

This object (Bel-Peol's right eye) is later known as the Banner (旗標, Hatajirushi) which act as the transmitter for the Snake to send his special Unrestricted Spell, Psalm of the Grand Order, to his Priestess and perform the famous "Grand Order" which is the idea of creating an entire copy of this world when the Snake of the Festival was sealed. They continues to receive the Grand Order until it is finished and their master returns for the next instruction. The Trinity later founded the biggest Crimson Denizen organization, Bal Masqué, after the event to ensure the success of their master's plan.

Participants

Belligerents
Snake of the Festival's Faction	Flame Haze
Commanders
Snake of the Festival (Leader) Bel-Peol (The Mediator) Sydonay (The General) Hecate (The Priestess)	It is not yet revealed if there is one or not.
Others
Mammon Ōnamuchi Illuyanka	Tis and Asiz Khamsin Nbh'w and Behemoth Princess Who Loves Insects and Valac NorthAir and Huitzilopochtli Singer Who Disperses Darkness and Great Drum That Bursts and Dances Lightning Swordsman and Takemikazuchi Nam and "Bridle of Wilderness"
Primary Goal
To build a small bounded world called the Great Binding Chain	Prevent the Crimson God from creating the Great Binding Chain
Result
Flame Haze is victorious, but suffers a great loss The Snake of the Festival is sealed by Eternal Pitfall Bal Masqué is created NorthAir discovers the truth behind the Power of Existence but decided to keep it as a secret For the first time, Khamsin has obtained clues that could lead him to the Monster and continues to pursue his nemesis Some Flame Haze are sealed together with the Snake of the Festival and changes into Colored Silhouettes protecting the Rift Between Both Worlds Nam's consciousness was condemned into the Rift Between Both Worlds, leaving her body and "Bridle of Wilderness" behind Bel-Peol loses an eye because she gives it to the Snake of the Festival The Snake of the Festival, while wandering in the Rift Between Both Worlds, has an idea of creating an entire copy of this world while he is sealed