[ Manga Porn Movie ] Demonion Gaiden 01

A demon named Astaroth once attacked the land of humans, igniting a global conflict. In the end, he was subdued by a gang of heroes, who seized his abilities and buried him in an underground cave. Due to the recent movements in the Earth's crust, there have been whispers that the seal has been breached and that the demon has been awakened. Astaroth's subterranean maze drew a large number of daring explorers focused on taking down Astaroth and making themselves renowned. They had no idea he had set them up for a fall...