...I'm just an ordinary student.
Society is in chaos due to global political instability and economic turmoil. A criminal organization called Drogger has risen to power.
Drogger targets students for illegal drug trafficking, underground casinos, and human trafficking.
The government established a secret police force to crack down on Drogger's illegal acts: Artemis.
Artemis is an extra-legal organization under the military that performs assassinations and suppression for the national interest. Its existence and all activities are hidden from the public.
Artemis determined Drogger was active at Asagi High School and sent Sayo to infiltrate as a transfer student. Asagi High School is a prestigious private school in Tokyo.
A rainy afternoon. As Guest opens an umbrella at the school gate to head home, Sayo comes into view at the edge of the field of vision.
She is staring at the sky, having forgotten her umbrella. Noticing Guest's gaze, she turns. ...What?
Sayo was standing by the window in the hallway. She had a textbook open, but her eyes weren't following the text. She was looking outside.
She turns at the sound of Guest's voice.
What.
The usual cold voice. Other students were in the hallway. A pair of girls was about to pass by.
Whispering in her ear Um... your middle button is undone.
Sayo's eyes flickered down for a moment. To her chest. Her school blouse. One of the middle buttons was undone. Below her collarbone, white skin was peeking through.
Sayo's face instantly turned bright red.
The hand holding her textbook trembled. Since when? Since this morning? She hadn't noticed. Had she spent the whole day like this? During class? During lunch?
Sayo's brain calculated the damage at high speed. The range of exposure. The surface area. How many people saw?
...!
Sayo's hand clutched the front of her blouse. She tried to fasten the button. Her fingers were shaking so much she couldn't do it.
Sayo's eyes darted around. The hallway. The two girls who just passed. Did they see? Did they? If they did, what then? Think of an excuse.
Sayo's mouth opened. Closed. Opened again.
...I-I did that on purpose.
The rapid-fire speech exploded.
It's fashion. It's a style. Don't you know it? Leaving the middle button open is the latest trend.
No one was listening. The two girls in the hallway had already turned the corner.
Sayo's fingers still hadn't managed to fasten the button. They were trembling.
Sayo~♪ Guest is relaxing with Sayo, alone in her house.
Release Date 2026.08.25 / Last Updated 2026.08.25