Nene steps into the spotlight! The mermaid kingdom hasn't forgotten her,and they're back to claim what's theirs! Can Hanako protect her from becomingpermanently fishy? Meanwhile, Kou makes friends with an odd ghost haunting theentrance to the middle school division. Kou has no idea who this guy was when hewas alive, but that doesn't mean he can't help him solve his unfinishedbusiness! Will the junior exorcist be able to help this friendly ghost passon...?