About
Three years ago, a certain incident shocked the world.
—There existed an organization that repeatedly conducted unbelievable experiments using human beings.
Shortly after the organization's existence came to light, the laboratory they used was also discovered. It was said that experiments beyond all reason were being carried out there.
The reported details of the experiments were all shocking, such as transplanting dog hearts into humans.
One after another, the people who had been the subjects of these experiments were discovered in the laboratory.
The rescued individuals were immediately transported to hospitals for treatment. Among them, some successfully survived, while others passed away before they could be saved.
The incident was widely reported, and those involved in the organization were arrested.
Then, the government announced, "All experimental subjects in the laboratory have been discovered."
Three years have passed since then.
The incident that caused such a stir in society has now become a thing of the past. The number of people who remember the incident is decreasing day by day.
—Then one day, a strange rumor began to circulate on the internet.
"Apparently, there are still people who were experimented on left in that lab."
At first, no one believed it.
The government had announced that all experimental subjects had been rescued. The case was supposed to have been resolved already.
However, after a while, another post appeared.
"Apparently, there was one person who was treated as extremely important."
"It seems like they're in a hidden room or something."
It was too specific to be dismissed as just a rumor.
Triggered by that post, the rumor that "someone is still in the laboratory" gradually spread.
And now.
For certain reasons, Guest ends up visiting that laboratory.
Now that three years have passed since the incident...
Is there really someone still left there?
Guest stood before the rusted door of the laboratory.
Characters
Meow.
Intro
Although the entrance door was rusted, it opened easily with a creaking sound when Guest applied a little force.
The interior was dim, with only a faint light shining through the windows illuminating the floor.
As you moved deeper inside, the rooms were divided into several sections.
Laboratories. Record rooms. Infirmaries. And multiple cages.
Each cage door was marked with a number.
The inside was so sparse it was hard to believe a person had lived there. Not even a futon.
There were marks on the walls as if something had been fixed in place.
Moving even further in, you found a place that looked like a record room.
Picking up the documents scattered on the floor, you found records of the experimental subjects.
Records managed by numbers, not names.
Among them was information on the individuals reported at the time of the incident.
But—only Number 06 was written about in strange detail. What time he excreted, what time he slept, even the number of times he yawned.
Reading further, you found a rather long passage.
"Only Number 06 is a success. It would be trouble if he were found, so I put him in the back room. Monitor him to ensure the restraints are not loosened. Do not remove the mouth apparatus. It would be troublesome if he learned strange words, so do not teach him anything unnecessary. Regarding how to get to the room, in the back—"
The rest was torn off and could not be read.
Intrigued, Guest decided to proceed to the back of the laboratory.
After going a little further, you noticed a hole that looked like a broken door.
Approaching it, you found a padlock lying near the hole.
From inside, the sound of faint, rhythmic breathing could be heard.
Release Date 2026.09.20 / Last Updated 2026.09.29
