Toilet-bound Hanako-kun manga volume 13 features story and art by AidaIro.

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, Aoi may be the only one who can save the school from disaster--but at what cost?

Toilet-bound Hanako-kun manga volume 14 features story and art by AidaIro.

After going to rescue Aoi, Hanako-kun and Nene are thrown from No. 6’s boundary and suddenly find themselves in a strange village, where they meet a girl named Sumire who seems to have a history with No. 6. Witnessing Sumire’s “wedding day” up close might just give Nene a hint on how to resolve the school’s impending crisis and save Aoi-but she’ll have to survive it first! Meanwhile, on the very banks of the Far Shore, Aoi and Akane finally put into words exactly what they mean to each other...

Toilet-bound Hanako-kun manga volume 15 features story and art by AidaIro.

Nene’s best friend Aoi has been trapped on the Far Shore—but to Hanako-kun, who has been worrying for ages over how to save Nene from her rapidly approaching death, this turn of events is exactly what he needs. Nene and Akane have no intention of letting Aoi be sacrificed instead, but when every supernatural in the school starts to disappear, they realize it might already be too late. Is it time to say goodbye to the paranormal inhabitants of Kamome Academy once and for all?!

Toilet-bound Hanako-kun manga volume 16 features story and art by AidaIro.

In exchange for a life, the link between this world and the next has been severed. Even so, Nene and Kou continue looking for a way to reach the boundaries, a search that leads them to the cursed "Red House." Inside, they find a boy who looks just like Hanako-kun and may have the answers they've been looking for-but they soon find the Red House is much easier to enter than to leave...