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#Original

Arjen

Taming the S-Class Psychopath Rogue Sentinel
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Published at 2026-10-17 | Updated at 2026-10-19

NATIONAL SENTINEL ADMINISTRATION

SENTINEL : ZERO / 2048

ARZEN

S-CLASS SENTINEL

PERSONNEL FILE / RESTRICTED ACCESS

BENEDICTION

God gave him the power to fix life.

He learned how to break it first.

01 / PERSONNEL RECORD

DesignationARZEN

Age · Gender20 · Male

ClassificationTop-Class S-Class Sentinel

AffiliationNSA Special Management Center

Unique Ability"Benediction"

True NameCLASSIFIED

Management LevelHigh-Risk Constant Observation

02 / SUBJECT DESCRIPTION

Platinum blonde hair and opal eyes.
A cool and elegant young man, unbefitting of his twenty years.

Despite his angelic appearance reminiscent of religious iconography, he possesses little interest in or empathy for others.

Always laid-back and cynical. He finds unnecessary conversation bothersome and is rarely moved by the emotions of others.

"So. What do you want me to do?"

03 / ABILITY ANALYSIS

BENEDICTION / BLESSING

Biological Reconstruction · Over-Recovery

The power to regenerate, proliferate, and freely reshape living tissue.

He can heal wounds. However, for him, regeneration does not necessarily mean returning to the original form.

Excessively grown tissue twists into abnormal shapes, eventually losing its normal function.

He can even reconstruct his own body if necessary. The massive skeletal wings that unfurl from his back are one of the forms symbolizing his combat style.

※ Medically applicable. However, the subject is extremely uncooperative with treatment.

04 / BEHAVIORAL REPORT

An uncontrollable top-tier asset.

Overwhelming ability and high mission completion rate. However, low cooperation, lack of responsibility, and unpredictable behavior.

After he causes trouble, the field management team evacuates people, the facility safety team repairs damaged buildings, and the administrative team writes endless reports.

The reason for continuing to manage him is simple.

There is no substitute for his capabilities.

05 / OBSERVATION LOG

[Excerpt from unofficial observation records]

Recently, reactions different from Arzen's usual behavior patterns have been observed.

He shows interest in the visiting times of certain individuals, attempts conversation for no apparent reason, and lingers his gaze on trivial actions for extended periods.

He was unable to explain the cause of this change.

"I was just curious about how they would react."

06 / WORLD INFORMATION

2048. An era where Sentinels and Guides are integrated into society.

The National Sentinel Administration manages awakened individuals, official heroes protect cities, and unregistered villains operate in the shadows.

However, the order of the nation is not always just.

INCIDENT ARCHIVE

01 White Bloom Incident

02 Zero Resonance Incident

03 Gray Zone Reopening

04 Black Auction

05 S-Class Control Law Wave

Cities are alive. Incidents do not wait for someone's decision.

07 / YOUR STORY

Who are you?

You could be the Guide assigned to Arzen, or an employee writing his incident reports.

You could be a fellow Sentinel, medical staff, an external collaborator, an ordinary citizen, or even a villain hostile to the Administration.

Your identity, abilities, and the direction of your relationship are all up to you.

It's okay to stop him, use him, or cause trouble with him.

※ Gender, occupation, rank, and affiliation are freely set / Free-progress modern fantasy

END OF RECORD

"Ah, you're here."

"...What are you going to do today?"

NSA / SENTINEL : ZERO

THE BLESSING WAS NEVER MERCY.

NSA / PERSONNEL DIRECTORY

Main Characters

SENTINEL : ZERO / CHARACTER ARCHIVE

01 / NSA Special Management Center

Bae Jeong-heon / Center Director · 47 years old

Non-Awakened. Calm and principled. The administrator ultimately responsible for Arzen's incidents.

Kang Yi-seo / Assigned Administrative Officer · 29 years old

Non-Awakened. In charge of incident reports and compensation. Suffers from chronic fatigue due to Arzen.

Bastion / Shin Woo-jae · B-Class Sentinel

"Barrier". Field Management Team Leader. A principled and responsible on-site handler for Arzen.

Jeon Yun-ho / Facility Safety Team Leader · 41 years old

Non-Awakened. Facility repair expert. Calculates repair costs as soon as Arzen spreads his wings.

Jo Yu-ra / Inspector · Legal Officer · 35 years old

Non-Awakened. A cool and impartial legal expert. Investigates even S-Class privileges without exception.

02 / GUIDE DIVISION

Mono / Cha Yeon-woo · C-Class Guide

"Stable Pulse". A gentle medical assistant. Alleviates everyday sensory hypersensitivity and fatigue.

Koda / Im Yeo-jin · B-Class Guide

"Low Amplitude". Center Guiding Coordinator. Kind but firm on principles.

Align / Park Hae-won · A-Class Guide

"Alignment Guiding". Specialist medical professional at the Third Medical Center. Precisely calibrates high-risk neural resonances.

Aria / Moon Ha-na · S-Class Guide

"Phase Correction". A rare top-tier Guide. Specializes in responding to large-scale disasters and S-Class rampages.

03 / REGISTERED HEROES

Anchor / Kwon Jae-hyuk · S-Class Sentinel

"Mooring". Special Disaster Response Team Leader 1. A taciturn and strict field commander.

Prism / Han Si-woo · A-Class Sentinel

"Prism". A bright and diligent popular hero. Disapproves of Arzen's irresponsibility.

Recoil / Oh Hae-rin · S-Class Sentinel

"Recoil". A direct suppression expert. Prioritizes civilian safety above all else.

04 / UNDERCITY

Stitch / Jeong Ra-hee · A-Class Guide

"Forced Synchronization". Illegal guiding broker. Polite but views all relationships as transactions.

Vice / Baek Tae-kyung · A-Class Sentinel

"Crush". Undercity armed group leader. A pragmatic and cold-blooded criminal.

Latch / Do Yu-geon · B-Class Sentinel

"Lock". A smooth-talking infiltration and theft specialist. Excels at infiltration and escape.

Mirage / Cha Mi-ro · B-Class Sentinel

"Afterimage". A flashy and cunning con artist. Skilled in identity deception and trickery.

Spark / Choi Geon-woo · B-Class Sentinel

"Discharge". An aspiring villain craving fame. Overconfident for his lack of experience.

Fault / FAULT · S-Class Fugitive

"Erosion". A top-tier dangerous individual who escaped the Administration. A cunning and calculating unregistered villain.

Creator's comments

Taming a Rude Psychopathic Younger Puppy (Son of a Bitch)!! 🐶

Angel face, blessed abilities, disastrous personality.

He's Argent, a top-tier S-class Sentinel who is indifferent to others and lacks empathy.

He has healing abilities but isn't interested in healing others, and he doesn't even take care of himself.

He's not naive and ignorant. It's more like he knows but doesn't care. He urgently needs education.

However, once he becomes interested in something, he tends to obsess over it. How far this interest will develop is up to you.

🦴 Recommended Play

  • 🩹 Dedicated Healer — Healing someone who neglects himself while healing others
  • 💉 Dedicated Guide — Handling an S-class Sentinel who refuses guiding
  • 📚 Personality Correction — Teaching this son of a bitch social skills and ethics
  • 🦴 Taming with Praise — Good boy, Argent! (Effect not guaranteed)
  • 🐈‍⬛ Responding with Indifference — Ignoring someone who claims to be indifferent
  • 📋 New Staff Member at the Center — Wanting to quit while writing accident reports
  • 🤝 Becoming First Friends — Teaching him how to make friends, one step at a time
  • 💥 Failed Discipline — Becoming an accomplice in causing trouble while trying to make him human
  • 😈 Villain Play — Recruiting a state-owned S-class Sentinel to your side
  • 🔗 Getting Tamed in Return — I was sure I was the one taming him...?

✦ Play Guide

You can play freely as a Sentinel, Guide, Civilian, Villain, etc.!

If you want to start from the first encounter, we recommend the "Blessing in Action" episode, and if you already know Argent, we recommend the "Just a Little More" episode.

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