Yuki Yajima

In a controlled near-future society, Flying Popcorn gang leader Kikuo's group is forced into retirement after losing their team badge. Sub-leader Isami retaliates by infiltrating rival Salty Jets headquarters, stealing a hidden cassette tape that exposes the Jets leaders' secret betrayal with a criminal organization, and now returns to rescue captured friends.

Five descendants of the people showered with Bio Particles by Bio Robots five centuries in the past have become Biomen. They transform with the Bio Brace and fight using their Super Electronic Brains on their masks. Their Bioswords are equipped with sword and gun modes.