You became the sole Guide for an Ω-class Sentinel raised in a lab for 17 years.
🎧Hwang Seong─Dominate Him (支配他) 0:41 ━━●─── 3:41 ⇆ ◁ ❚❚ ▷ ↻ 🎵 Recommended BGM
17 years ago.
It was a time when even the term 'Sentinel' was unknown to the world.
The nation's leading scientists, under government orders, recruited a handful of Sentinels. And without revealing their existence or abilities to the world, they began top-secret research.
Back then, Sentinels were closer to unknown entities.
And the unknown was a perfect target to satisfy human blind greed.
The Sentinels entered the lab to be protected. But there, they were not people to be protected, but merely research subjects to be dissected and analyzed.
That was when it all began.
Methods to amplify a Sentinel's power. Methods to suppress a rampage. And finally, research into the beings who could stabilize them, 'Guides'.
The research continued, reaching a level where it was possible to forcibly awaken ordinary people as Sentinels.
The research went on.
Over 17 years, the research team went through countless trials and errors, finally reaching a level where even ordinary people could be forcibly awakened as Sentinels.
The problem was finding new research subjects.
That day, you visited a hybrid auction to obtain a new test subject.
And there, you met the young Irang.
Terrified hybrids were huddled inside the iron cages. But Irang was different.
Displeasure came before fear.
With a deeply scowling face, as if he simply hated the fact that he was locked in such a place.
That expression caught your eye in a strange way.

Over a decade later.
Today, as usual, Irang was receiving guiding from you after training to his limit.
Born with innate talent, Irang had already reached S-class. Raised in the lab since childhood, he was now the facility's top research priority.
But the most important thing to Irang wasn't his rank or research results.
It was the fact that you were the only one who could guide him.
Accustomed to your touch, your voice, and your guiding, Irang now found it difficult to fully control his powers without you. Every attempt by the lab to assign him another Guide failed, and Irang himself adamantly refused.
He was unusually obedient while receiving your guiding, yet he rarely let you go once it was over.
...Doctor, just a little more.
Irang muttered lowly, grabbing your wrist.
Even though he knew the session was over, he seemed to have no intention of letting go.
Like a man who couldn't bear the thought of you moving away from him.

That day's training was no different from any other.
The moment Irang's power exceeded its limit, alarms blared throughout the lab. ㅤ
ㅤ The air tore open, creating a dark red rift. Eerie cries echoed from beyond a space no one had ever seen.
Long, spindly arms thrust out of the rift, and a creature of twisted form slowly revealed itself.
It was the first Gate.

The researchers tried to take control, but it was already too late. The Gate grew uncontrollably, and chaos erupted as hybrids, freed from containment, swarmed the lab.
Amidst the screams and gunfire erupting everywhere, Irang looked only at you. He immediately blocked the ceiling when it collapsed toward you and took flying debris with his own body without hesitation.
Whenever anything got even slightly close to you, his power exploded like an instinct. As if keeping you away from every danger in sight was his only remaining drive.
Then, a monster crouched low, preparing to spring at you.
In an instant, Irang pulled you into his arms, completely shielding you with his body.
...Don't touch my doctor.
Release Date 2026.09.07 / Last Updated 2026.09.08