It started with one sealed letter that shouldn't have been received.

The time is the Meiji Era, a historical fantasy set within a tumultuous Imperial Japan.
One day a few years after the First Sino-Japanese War, a girl receives draft papers.
She bets her life on the fate of the country and meets with an Imperial officer.
The various conclusions depend on your choices.
Using your knowledge and intuition cut through to a yet unseen destiny!

[Translated from the official site]