Nene’s best friend vanishes without a trace and no one else remembers she ever existed! To get her friend back, Nene is forced to call on Hanako for help and journey into a "Boundary" between the world of the living and the world of the dead.

The school is full on unlikely couples thanks to a tree that rumor has it makes any confession made under it succeed. When Hanako asks Nene to meet him there, Nene starts to suspect that he sees her as more than an assistant.