Kyosuke and his fiancée, Erisa, are visiting an isolated island in the sea and attending a mysterious festival to make a sacrifice to the island's gods. It should have been a romantic holiday, but the island seemed to be overshadowed by a great fear coming from the abyss...
Have you ever heard of the Taiwanese folklore about the girl in red? Some say she is a mountain spirit, while others say she is the spirit of a sacrificed young girl who wanders the mountains to satisfy the desires of the lost with a feast of fine wine and her beautiful body.
Researcher Leo was told on his first day at the institute that he needed to look after some mysterious creature—an innocent girl who fed on semen... There seemed to be more to the girl's secret than that, but no one wanted to reveal the maddening truth.