Toilet bound Hanako kun 13

Toilet bound Hanako kun 13 – Nene and Akane are rescued from the clutches of a horde of supernaturals by School Mystery No. 6 who then immediately kidnaps Aoi?! With so many School Mystery seats unfilled and the long, dark night of Urabon here at last, this ancient supernatural knows that Aoi may be the only one who can save the school from disaster—but at what cost?

The story revolves around school mysteries and rumors of tales of ghost, spirits and other paranormal beings of Kamome Academy High School.