This is a novel adventure game about sexual abuse and domination based on the 3D fighting game Soul Calibur.

There is a nameless swordsman from the east who wanders from battlefield to battlefield.
On one of these battlefields he finds a special sword that corrupts and consumes him.
Then, to draw more strong souls towards itself, it crosses the ocean to the mainland.

The curtain rises on the violation and disgrace of women whose souls are pure and untainted.

[From DLsite English]