Gamera 3: Revenge of Iris (1999)

A massive monster, Gyaos, reappears, endangering the Earth. Gamera, the giant turtle who has defended humanity for years, has now broken his connection with people. As Gyaos causes destruction, Nagamine and Asagi investigate this new danger.During the chaos, a young orphan named Ayana finds an unusual creature while mourning her family. She names it Iris and develops a strong bond with it. While Nagamine and Asagi try to stop Gyaos, they also deal with Ayana and Iris.Ayana secretly blames Gamera for her family's death. The story explores grief, revenge, and forgiveness as the heroes try to convince Ayana and Iris to abandon their plan to destroy Gamera.