Isaribi was promised that she would be returned to human form if she complied with Amachi's orders. To that end she attacked ships and killed a number of sailors under the disguise of the Kaima, a sea monster. Naruto was able to make her come to her senses, causing her to realize that were she to continue killing others to save herself, she would become a true monster. After his defeat, Amachi revealed that he never had a cure for her condition, and that he planned to dissect her once she was no longer useful. She returned with Naruto to Konoha after Amachi's defeat hoping that Tsunade can cure her.