New Headcanon Book

Tokyo Afterschool Summoners : Beyond Void

introducing new element: Void (With Rune representing a triangle intercrossed with a rectangle)
Void Deals damage from all sides however it's also weak to void itself

New transients:

Excalibur [ The Void swordsman ] / [The master of the exalted ] (Void Element)
Role: Guardian
Rule: To Cut Endless Rules 
Artifact: Exalted blade
Event Variant: Summer Dogdays
Charge attack:
Exalted Judgement

Lavos [ The Alchemist of ophiuchus ] / [ Ouroboros Alchemist ] (Infinity)
Role: Guardian
Rule: To Alchemized New knowledge
Artifact: Cedo and the twin snakes
Event Variant: Winter's Ophidian
Charge attack:
Transmutation Catalyzer

Garuda [The Blood Queen ] / [ Pride, Prejudice, and Bathory ] (Fire)
Role: Guardian
Rule: To Bequeath blood and vice
Artifact: Twin Talons of garuda and the blood pool
Event Variant: Erzabet Bathory
Charge attack:
Bathory Ripper

Excalibur Umbra [ The black beast / Umbral Samurai of the exalted ] (Void Element)
Role: Soldier
Rule: To Cut Endless Rules - Umbra
Artifact: Skiajati and exalted blade
Event Variant: Umbral Santa clause
Charge attack:
Umbral Exalted Judgement

Mag [magnetism Girl ] / [Polarizing to the crush ] (Water)
Role: Guardian
Rule: To Levitate things beyond
Artifact: Orthos 
Event Variant: Easter Gravity
Charge attack:
Polarizing Crush

Atlas [The Rumbling Titan ] / [ The Path to the Heap of stones ] (Wood)
Role: Hermit
Rule: To Create Grounds of the mountain 
Artifact: Tekko
Event Variant: Golden Week Titan
Charge attack:
Rumble Mountain 

Nidus [Helminth of Eris ] / [ The beast of Eris ] (Nether)
Role: ??? (Unknown)
Rule: To Spread infection 
Artifact: Hirudo and Hema
Event Variant: Infectious Doctor 
Charge attack:
Mutation Havoc

Mesa [ Queen of guns ] / [Regulation and Peace ] (Aether)
Role: Gun queen
Rule: To Be the Peacemaker
Artifact: Regulators
Event Variant: 4th of Regulating July
Charge attack:
Peacemaker

Harrow [ The Apostasy ] / [Chains of Harrow ] (Aether / Nether)
Role: Priest
Rule: To Chain the Dark Past
Artifact: Scourge and the thuribles
Event Variant: Camp Tutor
Charge attack:
covenant of the Dark priest

Caliban [ The Archon of Void ] / [ The Reaper of the Sentients ] (Void)
Role: War Machine
Rule: To Call upon the Sentients
Artifact: Venato and the progeny archons
Event variant: Living Spring archon
Charge attack:
Wrath of the progeny 

Guild: Tokyo Tenno's

guild master: Ordis (AI of curiosity and violence) - valiant, Cy (The War Master of space battles) - World

Location of the guild: Above Tokyo, Under the war ship, the Railjack

Allies: Summoners, Akasaka agents, Rule Makers, Warmongers, Akibahara Creators.

Enemies: Otemachi genociders, Invaders, Oshiage Game masters, and Ikebukuro Berserkers

Background: From a another universe, they're Guardians of the origin system, willing to defeat the archaic clones of grineer, futuristic and greed of corpus, the rapid infection of the infested, the sentient swarms, the orokin, and a lot of enemies. they stand firm to one another as sides

Policy: The Sentients had won. They had turned our weapons, our technology, against us. The more advanced we became, the greater our losses. The war was over unless we found a new way. In our desperation we turned to the Void. The blinding night, the hellspace where our science and reason failed.

We took the twisted few that had returned from that place. We built a frame around them, a conduit of their affliction. Gave them the weapons of the old ways. Gun and blade. A new warrior, a new code was born. These rejects, these Tenno, became our saviors. Warrior-Gods cast in steel and fury striking our enemies in a way they could never comprehend.

Excalibur was the first. - The Orokin archives
In Short, they're consider guardians of sorts, now they're willing to help people of tokyo

Theme: