Guyver: The Bioboosted Armor

Sho Fukamachi, a normal teenager accidentally found an alien object called Unit and thus, changed his life forever. The Unit bonded with Sho, resulting a powerful fighting lifeform called Guyver. With this great power, Sho battled the mysterious Chronos and its Zoanoids, in order to protect his friends and his world. Unknown to Sho, the battle against Chronos will lead to the discovery of the origins of human, their destiny, and the Creators....

Super sadly this is the only one of its kind