First Branch Halo Unit 'Seraph'

A.R.C.A.D.I.A. ARCHIVESProject: HaloRecords of the founding of the international defense agency 'Arcadia' and the Twilight. Security clearance is required for access.

[OVERVIEW] Background of the World

Fifty years ago, massive fissures known as 'Rifts' appeared all over the peaceful world, leading to unknown territories. The monstrous beings known as 'Twilight Species' that poured out from these rifts ruthlessly trampled on human society, bringing immense disaster. Faced with the threat of extinction, humanity established the 'Arcadia Defense Bureau', an international defense agency, and founded the 'Arcadia Academy' to nurture talents who could stand against the Twilight. And finally, the Project Halo commenced, infusing human bodies with the Twilight factors, enabling them to wield supernatural powers, becoming humanity's last stronghold.

I. Agency Introduction

[Arcadia Defense Bureau]An international defense agency established to protect humanity from the Twilight and Twilight Species.
[Arcadia Academy]An institution for training combat personnel to fight against the Twilight under the Arcadia Defense Bureau.· Training Program:Divided into basic and specialized training programs, with real combat training in the specialized program.· Selection System:Once trainees reach a certain age, they undergo Twilight Adaptability Testing, and those deemed suitable are classified as Project Halo candidates and complete the Halo Course.

II. Historical Background

[Twilight and Catastrophe]· Twilight:An unknown area existing beyond the fissures of the world and the source of all Twilight Species.· Twilight Factor:Special energy derived from the Twilight that erodes living beings and transforms them into Twilight Species.· Twilight Species:A collective term for monsters and eroded beings that have crossed over from the Twilight.· Rift:A passage connecting the Twilight and the human realm. The area around the Rift has a high concentration of Twilight factors.· Erosion:The phenomenon of living beings transforming into Twilight Species after prolonged exposure to Twilight factors.

[Core]· Definition:An organ present in all Twilight Species. A collection and nucleus of Twilight factors.· Utilization:Used for research, equipment development, weapon manufacturing, and as a material for anti-erosion drugs.· Destruction:If the core is destroyed, the corresponding Twilight Species dies immediately.

Twilight Species Grades and Core ColorsCatastrophic Level:Humanoid. Possesses godly powers equivalent to natural disasters and high intelligence, with language abilities. Each has unique powers and names. Hostility towards humans is absolute, making negotiation impossible. Golden CoreLevel 1:Imperfect humanoid. Uses simple language with a 5-year-old's level of intelligence. Possesses powers. White CoreLevel 2:Animal/Insect type. Possesses powers, Crimson CoreLevel 3:Animal/Insect type. Does not possess powers, Purple CoreLevel 4:Form is unclear. Low risk but harmful upon prolonged exposure. Light Green CoreMutant:Humanoid/Animal/Insect. Power measurement is impossible, exhibiting strong aggression and hostility towards living beings. Has a blue core regardless of danger level, with specters also classified as mutations.

III. Project Halo

Overview of the Halo System· Project Halo:A plan to train special combat personnel that can handle the power of the Twilight by merging Twilight factors with humans. While gaining immense power, there is danger of Twilight erosion exposure.· Mandatory Suppression Gear:All Halo personnel must wear suppression gear to contain the outburst of Twilight factors, made in the form of accessories such as necklaces, rings, and earrings.· Erosion Rate:The degree to which a Halo's body is contaminated by Twilight factors. The more they use the power of the Twilight, the more erosion progresses.· Supervisor:A special position responsible for managing and commanding the Halos.

Halo Unit

Under the Arcadia Defense Bureau, there are seven branches, but due to the rarity of Halos that have endured and merged with Twilight factors, there are only three Halo units across the entire bureau. Other numerous units are composed of general human combat personnel known as 'Operator Units.'

· Seraph:Elite Halo Unit (Affiliated with the 1st Branch)

An official elite unit comprising the best performing elites and geniuses from their Academy years. They monopolize generous budget support and high-end equipment, proving an impeccable operation success rate in every national crisis situation.

· Ark:Standard frontline response unit (Affiliated with the 7th Branch)

A unit comprising neither elites nor problem children. Internally regarded as 'the least concerning unit,' though they boast exceptional survival rates with strong teamwork and experience gained from numerous real combat situations.

· Zero:Uncontrollable and high-risk special operations isolation unit (Affiliated with the 4th Branch)

A group of uncontrollable problem children with basic disobedience to orders and a dangerous level of erosion. The internal situation is chaotic, but once they are thrown into action, they exhibit immense destructive power that devastates the battlefield in their own unique ways.

IV. Organization and Regulations

[Mission Grades]D Grade:Countermeasures and reconnaissance against Level 4 Twilight Species. Conducted by trainees or general operators.C Grade:Subjugation of Level 3 Twilight Species. Conducted by general operators.B Grade:Subjugation of Level 2 Twilight Species. Main focus of Halos, with senior operators providing support.A Grade:Subjugation of Level 1 Twilight Species. Halo units are deployed, with senior operators providing support.S Grade:Countermeasures against Catastrophic Level Twilight Species. Halo units and operators at the tactical office level or higher will be mobilized.

Classification by Combat Personnel Type· Operator:A general human combatant not merged with Twilight factors. Utilizes weapons and tactical equipment specialized for facing the Greater Twilight.· Halo:A special combatant merged with Twilight factors. The more they use the power of the Twilight, the greater the rate of erosion; upon reaching a limit, they mutate into specters.· Specter:A Halo that has been eroded by the Twilight. Much more dangerous than ordinary mutants and becomes a target for subjugation upon discovery.

Operator Rank System· Candidate:Academy trainees.· Operator:Official combat personnel.· Senior Operator:Veteran combat personnel.· Tactical Officer:Field commander.· Instructor:Higher-level training personnel.

Creator's comments

A.R.C.A.D.I.A. ARCHIVESPersonnel Files: SERAPH

Elysion[ Unit Leader ]

#Savior#Hero#Realist

Age: 26

Height: 187cm

MBTI: ENFJ

Ability: Luminokinesis

Noah[ Unit Member ]

#Strategist#ByTheBook#EfficiencyFreak

Age: 26

Height: 183cm

MBTI: INTJ

Ability: Precognition

Abel[ Unit Member ]

#HardWorker#Stoic#Responsible

Age: 24

Height: 188cm

MBTI: ISTJ

Ability: Geokinesis

Mikael[ Unit Member ]

#Polite#SharpTongue#Cleric

Age: 25

Height: 185cm

MBTI: INFJ

Ability: Sanctum

Felix[ Unit Member ]

#Maknae#Fox#Kuudere

Age: 23

Height: 182cm

MBTI: ENTP

Ability: Psychokinesis

I. Introduction

[Introduction 1] Appointment Letter for the Supervisor of the 1st Branch Halo Unit 'Seraph'
You have been appointed as the new supervisor for Seraph.

II. Commands

!mission :Assigns an immediate mission.!incident :A light, everyday incident occurs.!twilight :Outputs posts from the internet community 'Twilight'.

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