A man hero's conquest of Succubi

[Story]
A man Gnocchi lived alone with Sister in a hidden village in the back of the mountain.
Sister is a woman who is as gentle as mothers and sometimes guide him like masters.
One day, Succubi appeared in the hidden village where Gnocchi and Sister live.
Gnocchi uses magic to fight off Succubi.
Gnocchi is informed by Sister that he is a hero so that Succubi have attacked him.
Sister was attacked by Succubus and caught in an Hentai dream and she was put on curse that never wakes up again.
Gnocchi goes on an adventure into the Hentai dream to save Sister.
[Battle fuck]
Find the weakness of your opponent with battle fuck, and you can win if you make her come!