The renowned "Seven Wonders" that seem to exist in every school are a staple of Japanese urban legends. One of the most well-known of these stories is that of Hanako-san, a young girl's ghost that haunts the school's restrooms. Hanako-mythology san's is told differently at Kamome Academy. Rumor has it that if one is successful in summoning Hanako-san, she will give her summoner any request. Many individuals have tried to contact her, enticed by the rumour, but each attempt has failed. However, when Nene Yashiro, a young woman wishing for romantic fortune, summons Hanako-san, she realizes that the reported "female" is actually a dude! Following a sequence of terrible circumstances involving Nene's love interests, she finds herself unavoidably enmeshed in the world of the supernatural, becoming Hanako-kun's assistant.