Homare Hasegawa

Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.

A hospital welcomes its newest nursing addition, Yukari (Tomomi Segawa), who gets to stay in the first-year dorm on campus where having a man over will get you punished with a heavy hosing ("You dirty animals, stop resisting!"). Her rapport with her fellow nurses is put to the test when she ignores warnings and becomes involved with the head surgeon, Dr. Muraoka, who turns out to have a sinister side including a penchant for non-consensual sex and inappropriate use of cooking ingredients.

In 1966, five infant children were kidnapped by an alien group known as the Alien Hunters for the Reconstructive Experiment Empire Mess, who wanted samples of humans from Earth to experiment on. The children were rescued by Mess' arch enemy, the Flash alien race, which took each one to a different planet of the Flash solar system for training. Each child was trained separately in a range of superpowers that will allow them to fight Mess, their bodies also adapted to the atmosphere of the Flash Solar System making them gain special abilities. When they finally return to Earth in 1986 to combat Mess, who is now trying to invade it, they use the opportunity to search for their birth parents.

To protect innocents from ever-evolving crime, three souls burn brightly! This is the story of the Special Emergency Investigation Unit, striving for love and kindness in the Earth of tomorow!

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.