They decide to use the old school 's bell .
Since Satuski has not developed her spiritual powers fully , Amanojaku leaves Kaya 's body to fight with Ohma while Satsuki gathers power .
They decide to use the old school 's bell , but since Satuski has not developed her spiritual powers fully , Amanojaku leaves Kaya 's body to fight with Ohma while Satsuki gathers power .