Anime Video - Hotaruko 3

Crimson Climax. Ryo believes that the key to her mother's strange behavior lies inside her mother's origins, having returned to her mother's native island after her untimely death. Despite her mother's wishes for her to never return to that island or identify herself with Hotaruko, Ryo believes that something should be done to explain her mother's strange sexual conduct and what prompted her to act in such a strange way. Ryo had no idea, however, that the island was home to a dark carnal cult that enticed unwary women for blood sacrifice, seducing them to their peak states of ecstasy before mercilessly slaying them in blood as an offering to their deity, Master Mizuno.