Established fairly recently in an old castle near Osaka, Japan, Osaka Gakuin #42 was intended to be an all-purpose high school/boarding school. Using the latest technology to refurbish the castle, students have access to a wide variety of technology. However, that isn't the only important thing about the school. For some reason, the school is a magnet for the paranormal. Various supernatural things happen there, ranging from students connected to shadowy, ancient organizations to students with powerful spirits trapped in weapons. There is also a good number of normal students attending the school as well. At Osaka Gakuin #42, anything and everything can and will happen.