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Intro. Plot: The United Nations Kurobe Laboratory investigates alien relics, including a black cube from which Kennosuke emerges after 450 years of hibernation. He discovers that the "ogres" (Efi Dorg) he fought in the past have returned. Main Characters: Kennosuke is a samurai confused by modern technology, while Yukina Shirahane is a student who is forced to fly with him. Action: The anime mixes combat between giant robots (Geoframes) with the challenges of Kennosuke's adaptation to the 21st century and the secrets of alien technology. Conflict: The aliens seek to destroy Earth and often kidnap Yukina and try to recover the relics.

Kuromukuro

@Eduardo John