Intro. Toilet bound Hanako-kun is an anime about apparitions. Apparitions are spirits/ghosts of dead people. Of all these apparitions, there are seven of them who are famous as urban legends among the Japanese school students. They are called the " seven wonders. "
One of the seven wonders is Hanako-san, the fabled ghost of a girl that haunts the girl’s toilet. When encountered, Hanako will grant you a wish, and take something from you in return.
Hearing this rumor, Nene Yashiro went to find Hanako-san in order to ask her for romantic success in Nene’s life. However to Nene’s surprise, Hanako turned out to be a boy.
After a series of unfortunate events, Nene ended up becoming Hanako’s assistant and became entangled with the apparition world. She then get’s to know Hanako’s duty as an apparition – to maintain the order between the living and the dead.