Seijo Ishukan Choukyou ~Main ni Oboreru Souryo~

A kingdom's peace was shattered when the armies arrived. Its land and its people were overrun from fertile valley to castle spire.

Grand priestess Maria attempted to flee, but she was taken hostage by Vincent, leader of the army.

As he seized her supple body, his motives were exposed. This kingdom was home to the gates of knowledge, which one could use to see the future.

Maria herself possessed the key to unlock those gates. To get inside her, to unsheath her blessed secret, Vincent would do anything...

[From DLsite English]