Muteki Ou Tri-Zenon

In the Edo Period, three strange space capsules fell to Earth. Fearing they might cause chaos, people buried them deep underground and gave a map describing their locations to the Kamui family. Now, the capsules have begun awakening one by one. The first to emerge is Tri-Zenon, one of the Zenon Guardians, now piloted by Akira Kamui, his brother Ai, and their friend Kanna. As aliens arrive on Earth with unknown intentions, they must confront Tri-Zenon.