Bio Booster Armor Guyver

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A test type Zoanoid escapes from the Chronos Corporation with three Guyver Units. Chronos soldiers attempt to recover the units from the test type, but are thwarted when the test type detonates a bomb that he has concealed in his bag. The Guyver Units are scattered in the blast. Two young high school students, Shō Fukamachi and Tetsurō Segawa stumble across a lost Guyver Unit known as "Unit I." The second is retrieved by Chronos and merges with Oswald A. Lisker to become the second Guyver later on. The final unit falls into the hands of Agito Makishima, who merges with it at an unspecified time. Shō accidentally activates the unit which then painfully merges with him.