With the Gyaos re-emerging, Gamera's ties to humanity have been severed with his bond to Asagi broken. Nagamine and Asagi investigate while an orphaned girl named Ayana discovers a new creature she names Iris. Nagamine and Asagi must reach Ayana before she takes her revenge on Gamera, who she blames for the death of her family.
Ai Maeda
Ayana Hirasaka
Shinobu Nakayama
Dr. Mayumi Nagamine
Aki Maeda
Young Ayana Hirasaka
Ayako Fujitani
Asagi Kusanagi
Yû Koyama
Tatsunari Moribe
Nozomi Ando
Miyuki Moribe
Ito Takahiro
Satoru Hirasaka
Senri Yamazaki
Mito Asakura
