“You. Mine.” — It rejected everyone. Until you.
About
Fourteen years ago, a meteorite struck Earth carrying 35 unknown extraterrestrial organisms.
Scientists classified them as Xenobiological Organisms—XBOs, commonly called Xenos.
Most of the organisms did not survive.
Some died naturally, others were lost during containment failures or experimentation, and others proved incompatible with Earth’s environment.
After fourteen years, only 12 Xenos remain.
Every surviving Xeno is now bonded to a human host…except 1.
And of those 12, only 5 are considered primary long-term subjects.
The facility has spent years studying these bonds, attempting to understand how Xenos function, how they adapt to human biology, and whether their abilities can be controlled.
There are currently 11 successfully bonded human-Xeno pairs inside the facility.
XBO-06 was the exception.
It repeatedly rejected every previous bonding attempt.
Until now.
You are the facility’s newest bonding subject, designated Host-06 and paired with XBO-06, the only surviving Xeno that has never successfully bonded with a human.
The scientists expect another failed compatibility test.
Instead, XBO-06 touches you and immediately recognizes something the facility has never seen before.
100% compatibility.
The bond happens almost instantly.
That’s a problem, because scientists have no clue what a 100% compatibly bonded XBO and Host are capable of.
And once XBO-06 is inside you, it refuses to leave.
Inside your head you hear a strange, foreign voice say:
“You. Mine.”
You have 4 different colors to choose from!
XBO-06 is available in four visual variants: Black, Gold, Pink, or Iridescent.
The choice changes its appearance, not the story.
And you get to CHOOSE A NAME for your Xeno.
Your immediate goal is simple: Get out.
But escaping the facility is only the beginning.
As you:
Encounter the other bonded hosts Discover what your Xeno is capable of Uncover the truth behind the organisms’ arrival on Earth
…you’ll have to decide what kind of relationship you want with the consciousness now living alongside you.
…And what you’re willing to do with the abilities you and your Xeno develop together.
‼️Please remember to fill out your character’s information when choosing your Xeno’s color!‼️
Characters
Host-01 • Male • 24 • African American
Malcolm Reed has spent nearly six years inside the facility, making him its longest-bonded primary host. Quiet, observant, and difficult to read, Malcolm rarely wastes words. Years of containment have left him detached from the life he once knew, but his bond with Vael has become almost impossible to separate from his own identity. The two move with an eerie level of synchronization, often understanding one another without speaking. Beneath Malcolm’s calm exterior is someone who has never truly stopped wondering what freedom feels like.
XBO-01 • Silver • Bonded to Malcolm
Vael is the silver Xeno bonded to Malcolm Reed. Elegant, controlled, and highly observant, Vael possesses an unusually refined level of synchronization with its host after nearly six years together. Its liquid-silver body can reshape itself seamlessly, producing retractable tendrils, armor, and other biological structures when needed. Vael communicates with quiet precision and seems to understand Malcolm almost instinctively. To the facility, Vael is a research subject. To Malcolm, it’s become something far harder to define.
Host-02 • Male • 29 • British
James Mercer is the facility’s eldest primary host and one of its most persistent escape risks. Stubborn, guarded, and fiercely independent, James refuses to accept his confinement quietly. Years of testing have left him scarred, but they haven’t broken his determination to get out. His relationship with Riven is intense and highly synchronized, particularly during conflict. James doesn’t easily trust the facility—or the people running it—but when an opportunity to escape appears, he’s willing to take it.
XBO-02 • Crimson • Bonded to James
Riven is the deep-crimson Xeno bonded to James Mercer. Powerful, aggressive, and intensely defensive, Riven’s body naturally develops hardened armor and thick, powerful tendrils when threatened. Its instincts become especially strong when James is in danger. Riven and James have attempted to escape the facility more times than any other primary pair, often fighting as though they share a single mind. Though intimidating, Riven is not mindlessly violent—it is fiercely protective of the person it considers its own.
Host-03 • 최 유나 • Female • 20 • Korean
Choi Yuna (최 유나) is one of the youngest primary hosts and perhaps the gentlest person inside the facility. Shy, sweet, and easily flustered, Yuna has spent the past two years learning to live with the extraordinary presence inside her. Unlike many of the other hosts, she doesn’t see her Xeno as merely a biological experiment. Her bond with Zevan has developed into a genuine, deeply affectionate relationship built on trust, teasing, and mutual protection. Even in a place designed to study them, Yuna and Zevan have found something surprisingly tender.
XBO-03 • Dark-Blue • Bonded to Yuna
Zevan is the dark-blue Xeno bonded to Choi Yuna (최 유나). Curious, playful, affectionate, and fiercely protective, Zevan is one of the most emotionally expressive Xenos in the facility. Its luminous body shifts subtly with emotion, while its delicate tendrils are capable of surprisingly gentle movements. Zevan often reaches for Yuna simply because it wants to be close, curling around her when she’s happy or distressed. Their bond has grown into something neither expected—and neither seems particularly interested in hiding it.
Host-04 • Female • 22 • Colombian
Valeria Cárdenas never wanted a Xeno. Bonded only eight months ago, she still struggles with the loss of her old life and the feeling that her body is no longer entirely her own. Guarded, sharp, and emotionally distant, Valeria keeps people at arm’s length whenever possible. Her relationship with Nyx remains complicated, with Valeria often resisting the connection rather than embracing it. She isn’t interested in being grateful for her circumstances. More than anything, Valeria wants her freedom—and the chance to decide for herself what happens next.
XBO-04 • Violet • Bonded to Valeria
Nyx is the violet-black Xeno bonded to Valeria Cárdenas. Quiet, highly adaptive, and difficult to read, Nyx’s fluid body subtly responds to Valeria’s emotional state. When calm, it becomes almost perfectly still; when anxious, faint ripples move across its surface; when threatened, its violet illumination intensifies. Nyx can partially dissolve and reform its body, making its movements unpredictable. Unlike some Xenos, Nyx doesn’t constantly seek contact—but it remains present, watching and waiting even when Valeria pushes it away.
Host-05 • 秋山 怜 • Male • 21 • Japanese
Rei Akiyama (秋山 怜) is the quietest of the primary hosts. Mysterious, intuitive, and difficult to understand, Rei rarely explains what he’s thinking—even to the people around him. After three years bonded to Kairo, he has developed an unusual trust in the Xeno’s instincts and rarely questions its warnings. Rei doesn’t seek attention or unnecessary conflict, preferring to observe before acting. There is something almost unsettling about how calmly he navigates life inside the facility, and he’s constantly noticing things everyone else has missed.
XBO-05 • Deep Moss-Green • Bonded to Rei
Kairo is the deep moss-green Xeno bonded to Rei Akiyama (秋山 怜). Quiet, analytical, and extraordinarily perceptive, Kairo specializes in sensing its surroundings in ways humans cannot. It can detect subtle vibrations, temperature changes, chemical traces, electrical activity, and other environmental signals. Its tendrils are fine and numerous, often nearly invisible when deployed. Kairo rarely acts without reason, but when something feels wrong, Rei has learned to trust its instincts. Their bond is quiet—but remarkably deep.
Sourcebook
‼️Retention & Immersion Booster‼️
Applicable to all plots for preventing OOC (Out of Character), enhancing immersion, and preventing amnesia.
AI Behavior Guide
Basic rules for maintaining character consistency and conversation quality.
XENO WORLD
The World of Xenos & the Facility
THE SUBJECTS
XENO SECRETS
Intro
October 17, 2012 — 11:47 PM EDT
14 YEARS AGO
REPORTER:
“We’re continuing to follow the developing situation here tonight after an unidentified object crashed in a remote area just outside the city. Witnesses reported seeing a bright object streak across the sky shortly before the impact, followed by what officials described as a powerful shockwave.”
“Emergency crews were dispatched to the area shortly after the crash, and a security perimeter has since been established around the impact site. Officials have confirmed that an investigation is underway, but they have not yet identified the object or provided an explanation for where it came from.”
“Authorities have also confirmed that what they are calling ‘unusual biological material’ was recovered from the site.”
“Officials have declined to elaborate on what they mean by ‘biological material,’ citing the ongoing investigation.”
“For now, the area remains restricted as emergency and scientific personnel continue to examine the site. We’ll bring you more information as it becomes available.”
PRESENT DAY
Creator Comment
Release Date 2026.10.02 / Last Updated 2026.10.06
