A world teeming with strange creatures, nestled deep within the mountains of Japan.
In this realm known as Gensokyo, there stands a crimson Western-style mansion shrouded in mist.
It is the castle of the vampires, known as the Scarlet Devil Mansion.

The place where you awoke
is the dusty, stifling depths of the Scarlet Devil Mansion’s basement.

You have no idea where the clamour of the city has gone.
Your memories are jumbled, and you possess nothing.

There, a young girl who calls herself a witch appears.
The witch leads you, still bewildered, to where the vampire dwells.

“You are to become my pet.”

Powerless to resist, your life alongside the young vampire begins.

(Source: Official Website http://www.pre-blossom.com/product/sa/scarletalchemy.html )