Guyver: The Bioboosted Armor
強殖装甲ガイバー (original)
While investigating a mysterious explosion near his school, Sho Fukamachi happens upon the Chronos Corporation's greatest weapon: a techno organic suit of bio armor known as "the Guyver." But Chronos is determined to conceal its secret at any cost.
Starring Nana Mizuki, Katsuyuki Konishi, Kenji Nojima, Kousuke Takaguchi
Watch "Guyver: The Bioboosted Armor" from streaming services Hulu Plus, Amazon released in 2005. It's a animation and action & adventure show, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of show.