The 10th anniversary work of the circle Zero-One.
This is the first episode of the 7 Days series. Each episode is sold separately.
The content is secret, and there is no trial to demo-play,
so you can only see the sample CGs to get an idea.
If you like what you see, please buy, and enjoy the series.
Yui Natsuki (heroine) is voiced by Momoyo Akiba.