Based on the comic book by Tatsuo Kanai
Yoshida is a young man who works part-time at a convenience store. When he finishes his part-time job and is about to go home, a girl who works with him, Taniguchi, stops him by saying, "I have a request for Yoshida-kun."
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.
