Laboratory Guinea Pig

Aster opened his eyes, but to his surprise, only darkness welcomed him.

"This place is..." he muttered, looking around in confusion.

The first thing he noticed was that he could see his own body—albeit naked—even though the space seemed to lack light sources. Other than that, there was nothing but darkness spreading in all directions, as if he had been left in the middle of nowhere, with nothing around him.

Curious, Aster began walking onward. Mysteriously, he found that there was ground below his feet. The texture wasn't something he had felt before—neither concrete nor dirt—adding to the mystery of his current situation.

"...?"

As he kept walking forward, he noticed faint sounds reaching his ears. They sounded like low whispers, coming from various sources. What confused him the most, however, was that all the voices sounded feminine.

"This is... rous... Save... now...!"

"... Can't... Rules... remember?"

"But... rate... die!"