Nene steps into the spotlight! The mermaid kingdom hasnt forgotten her, and theyre back to claim whats theirs! Can Hanako protect her from becoming permanently fishy? Meanwhile, Kou makes friends with an odd ghost haunting the entrance to the middle school division. Kou has no idea who this guy was when he was alive, but that doesnt mean he cant help him solve his unfinished business! Will the junior exorcist be able to help this friendly ghost pass on...?