Gamera 4: Truth (1970)

Independently produced sequel to "Gamera 3: Revenge of Iris (1999)". The Gyaos horde transforms into the hyper-powerful Albino Gyaos and kill Gamera - but a new Gamera regenerates from mana power provided by the Earth. The violent new Gamera then takes on Albino Gyaos in a decisive final battle.