Ippei Sôda

A young girl named Mitsuki receives a ticket for a bus tour from her uncle. The tour appears to be normal (except that everyone appears to be quite somber), but Mitsuki learns its true purpose. All passengers and the tour manager have a suicide pact to send the bus over a cliff so that the families can collect the insurance money. (imdb)

During the reign of the 11th Shogun, a series of supernatural incidents occur every night in the Edo Castle. A beautiful inspector appears with thunder and lightning to suck people’s blood and kill them. The examiner’s true identity is Amakusa Shiro, a young samurai from the Amakusa clan that was destroyed by the harsh Christian persecution of the Shogunate. Shirô sold his soul to the devil and became an evil spirit.