Staz is a vampire from the surreal "Demon World", and Fuyumi, an ordinary girl, accidentally wanders into the Demon World through a portal. Subsequently after meeting each other, Fuyumi is killed by a carnivorous plant and turned into a ghost, causing Staz to take responsibility and pledge to help bring her back to life.
Lupin is framed for the murder of Inspector Zenigata by a mysterious assailant holding a silver-coloured Walther P38 pistol Lupin himself once owned. Tracking the true killer leads Lupin to the island of the bloodthirsty Tarantula assassins inside the Devil’s Triangle. After joining the spider-tattooed army against their will, Lupin and his gang make both new friends and enemies as they not only plan to take home the Tarantulas’ massive gold repository for themselves, but hunt down the shooter from Lupin’s past. Can Lupin put to rest this demon who haunts his memories with the Walther P38?
Since the graduation of the senior members of the club, Takezou ends up being the sole member of the "Koto" (traditional Japanese string instrument) club. Now that the new school year has begun, Takezou will have to seek out new members into the club, or the club will become terminated. Out of nowhere, a new member barges into the near-abandoned club room, demanding to join the club. How will Takezou be able to keep his club alive and deal with this rascal of a new member?
