Hanako-san of the Toilet Arc

ARC Hanako-san of the Toilet Hanako-san of the Toilet is the first story arc of Jibaku Shounen Hanako-kun. It takes place in Kamome Gakuen and depicts the introduction of the three protagonists: Hanako, Yashiro Nene, and Minamoto Kou.

Synopsis
Nene approaches the girls bathroom on the third floor with a wish in mind. She steps ever so close to the third stall of the bathroom. She begins to knock on the door then, "Hanako-san, Hanako-san. Are you in there?" She feels a being touch her on the shoulder and turn back only to that the Hanako-san she summoned is actually...a boy? He says he can grant her wish but his methods to doing it are not what she expected, at all.