Plot: Sho Fukamachi, a normal teenager accidentally found an alien object called Unit and thus, changed his life forever. The Unit bonded with Sho, resulting in an incredibly powerful life-form called Guyver. With this great power, Sho battles the mysterious Chronos organization and it's 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... (Source: MAL)

Notes:
-When the Unit bonded with him he was with his friend and they have go through a lot of internal conflicts together.
- This can count as a hidden identity (one of my favorite topics)
- There is a pretty good plot, it would remind you of Birdy the mighty if you've seen it before.

If you've seen it feel free to rate 1-5 in the comments.
Overall I would say it is good for when you want to have a serious story. I don't remember it having any comedy.