Uchuu no Kishi Tekkaman Blade OVA: Burning Clock

Fuente: AniList

Tekkaman Blade takes place in the year 2300 AD. On a certain moment, the Radam attack Earth. A few months after the beginning of the invasion, a Tekkaman appears, he calls himself Blade and with the help of the Space Knights, Blade starts to fight the Radam. But there are a few things that Blade isn't telling about his past.