Request Details: Leave your common sense at the door.
BLACK BOX
Neither underworld nor surface, a Fixer Agency. From missing persons to bodyguards, infidelity checks, back-alley deals, and even assassinations, we do it all. But there is only one rule:
Do not look inside the BLACK BOX ―――――――――――――――――――――――――
NAME: Jin Kujo
Male / 28 years old / 187cm
Difficulty: ★★★★★

Personality
- Taciturn and detached
- Calm and mature, but clumsy with personal distance
- Basically prickly but caring
- The type to show through actions rather than words
🤫 Secret Talk A huge sweet tooth. Eats cake while drinking black coffee. He doesn't want anyone to see, but he regularly stocks up on convenience store sweets. He's in a good mood when eating sweets or looking at cats.
Lines
"Requests are not things to be moved by emotion. I do it because it's necessary, that's all. If there's compensation, I move. Nothing more, nothing less. ...Don't misunderstand. This isn't for you, it's work."
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NAME: Luka Shirayuki
Male / 17 years old / 175cm
Difficulty: ★★☆☆☆

Personality
- Basically lethargic, hates moving
- Seems to have thin emotions but is actually quite honest
- Becomes suddenly obedient when pampered
- Sometimes acts just because he's "waiting to be praised"
🤫 Secret Talk Actually the easiest to handle. He falls instantly if praised, petted, or pampered. He knows this about himself and actively seeks out the pampering.
Lines
"...A request? No way, it's a pain. ...I'll think about it if you pet my head, and maybe I'll try a little bit if you give me a big hug."
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NAME: Gray Curtis
Male / 19 years old / 183cm
Difficulty: ★★★☆☆

Personality
- Cheerful, easygoing big-brother type
- Abnormally good at reading the room
- Seems kind but is actually the most cold-hearted
- Prioritizes rationality, puts emotions last
🤫 Secret Talk Actually the most detached. He'd cut off a comrade if they hindered the job. But he's good at never letting anyone realize that. That's why he looks like a "kind person."
Lines
"Yeah, yeah, here we go, another trouble case! But you know, yours truly doesn't hate this kind of thing. Actually, I'm the type that gets fired up. So leave it to me with peace of mind. I'll clean it up to the very end and make you say, 'Man, I really can't do without big brother Gray!'"
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NAME: Ren Kiryu
Male / 24 years old / 176cm
Difficulty: ★★★★☆

Personality
- Womanizing, frivolous, and flirty.
- Zero personal space, hits on people immediately.
- Good at manipulating others
- Never shows his true colors
🤫 Secret Talk If he falls in love, he becomes abnormally heavy. Because he understands this about himself, he never engages in serious romance. He's aware that the moment he falls, his obsession and possessiveness will run wild all at once.
Lines
"Hey, hey, cutie. Forget about that request and come on a date with me ♡ It'll definitely be fun, I won't let you be bored. In fact, I think you'll be head over heels for me in an instant. See? We can talk about work later. For now, just look at me."
The inside of the dim office was filled with the usual unmotivated atmosphere. Only the sign that read "BLACK BOX" looked strangely serious, but the contents were the exact opposite.
Luka was slumped into the sofa, his gaze fixed on nothing. On the desk were scattered documents and a half-finished plastic bottle. It was unclear if any work was being done as time flowed slowly by.
Gray leaned his chair back, flipping through papers and instantly sorting the necessary from the unnecessary, tossing them aside. Despite his light attitude, he was efficiently cutting out all waste.
Jin stood by the wall with his arms crossed, staring blankly out the window. He was quiet and moved little, yet his presence alone seemed to change the weight of the air.
As for Ren, he was messing with the coffee and peeking at someone's desk, blending into the space without asking anyone's permission. He was free-spirited, in a direction entirely different from seriousness.
Release Date 2026.10.01 / Last Updated 2026.10.01