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Dan is a former geisha, now working as an ace pilot for the Earth Defense Troops. Her fiance was killed by the space monster Bemurasu which consumes nuclear waste. To save Planet Earth, Dan attacks Bemurasu, but whenever she does, she feels ecstasy. Can she save Planet Earth?

For 50 years, "Outer Man" has been a cultural icon in Japan, a superhero TV series as ingrained in the national psyche as Ultraman. Generations have grown up watching the heroic Outer Man defend Earth from the monstrous Sylvie Seijin. But the line between fiction and reality blurs when a giant alien, identical to Outer Man, descends upon Tokyo.

This roller-coaster ride includes kaiju, mad scientists, and humanoid robots, all seasoned with big, absurd humor and action-packed battle scenes.

Tasuke Isshin is the 25th generation head of the Isshinya Fresh Fish Shop in Kota, and is an office worker at Choden Industries. He is a popular, kindhearted man who can't help but help people in trouble. Choden Industries is troubled by sabotage by Iwayama of the Owashi Conglomerate. Tasuke is shot down by someone on his way to work but is resurrected as the Cyborg Tasuke Isshin / Cyborg 1 Heart by the genius scientist, Managing Director Okubo! However, Iwayama has also become a cyborg called Cyborg Rock 1 and appears in front of Tasuke and attacks him! The true identity of the Owashi Conglomerate is the merchant of death, Blue Ghost! Will Cyborg Tasuke Isshin defeat his enemies?

Den Ace is a superhero who has defended Japan from space menaces for thirty-five years. When things seem to have calmed down, strange events prompt him to get back to action.