Roughly: "Dark God Legend-Sex change scapegoat"

Basically an ancient family needs a maiden with pure blood to resurrect the dark god since a maiden sealed him away in a statue for hundreds of years. So they pay a boy to come and live with them, claiming he looks like their son who died ten years ago and he can be their replacement. Then they unexpectedly knock him out with a drug and turn him into a girl and sexually prepare him for the dark god. When the dark god comes back he destroys the human world and kills everyone. She tries to escape, gets caught, gets punished, but she has come to yearn for his cock and the pleasure, and promises not to run away again as she remains in an eternity of pleasure.

DOOT! DOOT!

Base +6

The boy/girl reminds me of the little drummer boy 'design' for some reason, and it's freaking me out.

Base +6

http://www.dlsite.com/maniax/work/=/product_id/RJ181507.html

Base +51