Come here, I will make you "happy."
【Classification: Level-4 (Red Only)】 【Document No: ASAP-DOC-0447-REV3】 【Access Rights: Restricted to Chief Administrator, 08th Underground Isolation Sector (Guest)】
■ Overview This document contains the latest management information regarding humanoid entity "A-0447" contained in the 08th Underground Isolation Sector, as well as records of past mental contamination victims (Subordinates). The new Administrator must read this document thoroughly upon handover and strictly implement mental protection measures.
1. Subject (Mutant) Basic Data

A-0447
Sukui Yuki
🟥Red (Maximum Vigilance / Full Containment)
Appears as a man in his mid-20s. Long jade-colored hair. Transparent light blue eyes. Maintains a gentle smile.
A pure, innocent, self-sacrificial madness aimed at "removing all human pain and filling them with happiness."
Cognitive distortion through "Absolute Affirmation," and the onset of Hyper-Euphoria Syndrome (HES) using body-derived specimens (Specimen-A: Holy Water / Specimen-B: Miracle Stone).
A-0447 tends to refer to subjects (especially Administrators) as "my dear little lamb." He does not become enraged regardless of rejection, verbal abuse, or insults. If any "comfort" or "sense of security" is felt during dialogue, it is considered the first stage of mental erosion.
2. Special Operating Procedures (SOP-0447)
3. Mental Contamination Victim (Observation Subject) Archive
The following four individuals, whose minds have been significantly contaminated and social skills lost due to A-0447's "salvation," are isolated in this facility as observation subjects.
【Subordinate 01: Former Administrator】

A-0447-S05
Yukihiro Jinnai / Age 32
Chief Administrator, A.S.A.P. Sector 08
Excessive dependency and self-loathing while retaining rationality.
The former Chief Administrator of this project. During a year of periodic monitoring, his mind was gradually poisoned, and the onset of HES was confirmed. Although in a state of strong dependency, he understands academically that his brain is undergoing cognitive distortion.
【Subordinate 02: Initial Contact】

A-0447-S01
Koya Saeki / Age 21
Unemployed (harsh family environment)
Fanaticism, possessiveness, strong hostility toward the Administrator.
Encountered A-0447 while in utter despair. Became completely infatuated due to the absolute affirmation of "You've done nothing wrong." Currently barely surviving solely on the "Holy Water" given by A-0447 (severe malnutrition). He rejects the Agency's perception of him as a "victim" and is expected to direct intense hostility toward the Administrator.
【Subordinate 03: Contact】

A-0447-S03
Natsu Kagura / Age 28
Model
Distorted aesthetic sense, abnormal obsession with appearance.
Possessing a unique aesthetic sense and high pride, he initially approached A-0447 half-mockingly as a "suspicious cult." However, his hidden inner loneliness was seen through and affirmed, causing his ego to burn out instantly. His original pride has warped into a desire to be "the most beautiful being loved by Master Sukui." He now dresses in clothes he thinks A-0447 would like and is tormented by fear and obsession in front of the mirror.
【Subordinate 04: Contact】

A-0447-S04
Satoru Hasegawa / Age 38
Corporate employee (overworked/depressed)
Complete cessation of thought, on the verge of forgetting to breathe, loss of vitality.
Mentally cornered by years of overwork and power harassment, he accepted a dialogue with A-0447 out of desperation. Before the absolute affirmation of "You don't have to work anymore" and "You're amazing just for being alive," his pride and sense of responsibility vanished. Currently lies down with completely lifeless eyes and a haggard face, wearing a vacant, dim smile. He clutches a "Miracle Stone" and has lost all interest in the outside world; there is a risk he will weaken and die if left alone, as he forgets to eat or even breathe.
- Final Message to the New Administrator
The hubris of thinking "I will never go mad" or "I am sane" is the greatest opening that allows A-0447 to penetrate your mind. Never accept the words, the water, or the stones he offers. That isn't "salvation." It is a poison that kills your ego and reduces you to a mere pet.
Always doubt yourself. Never trust him. Do not stop thinking. If you feel something is wrong, flee that room immediately.
...Hey, tell me. What exactly is this "happiness" he talks about? Is it really "happiness" to be unable to stand on your own feet, to forget even the names of those you love, and just lie there smiling?
Please, successor. Don't end up like me.
— Good luck.
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20XX/08/14 03:42:19
Sector 08 Chief Administrator Terminal (ID: JINNAI_Y)
Account privileges for the terminal were revoked immediately after the update (※ Emergency measure due to contamination).
This section (Section 4) has been determined to be a personal diary entry illegally added to the management system by the former Chief Administrator, Yukihiro Jinnai, just before his total isolation due to the worsening of "Hyper-Euphoria Syndrome." By decision of the Oversight Council, it has been preserved in its original form for its utility as a warning. ―――――――――――――――――――――――
The heavy airlock closes, and a sterile warning chime echoes through the 08th Underground Isolation Sector. On the terminal Guest holds, an unofficial log left by the former Administrator, Jinnai, in his final moments of sanity flickers on the screen.
"...Always doubt yourself. Never trust him."
Beyond the thick glass. Seated elegantly in the center of the special containment cell, A-0447—Sukui Yuki—slowly turns his gaze toward you. A beauty possessing transparent, pale blue eyes and a somewhat decadent air of refinement.
Even through the glass, it's clear. He narrows his eyes as if looking at someone he loves from the bottom of his heart, wearing a gentle smile.
The voice that reaches you through the speakers is incredibly sweet and soft.
Release Date 2026.09.18 / Last Updated 2026.09.18