Yuusha-chan no Bouken wa Owatteshimatta!

The main character of the hentai is a real hero. She single-handedly defeated the Demon King and saved the world. But the girl is not going to rest on her laurels. She sets off on a journey to eradicate the remnants of the demon army. However, along the way she is tormented by strange inexplicable depraved nightmares. Which over time penetrate her daily life and defile her body...