Uchuu no Kishi Tekkaman Blade OVA: Burning Clock

As Shinya Aiba approaches the end of his life, memories return from long before the Radam turned the Aiba family against itself. His childhood with his twin brother Takaya was marked by constant competition, especially as Shinya struggled with the belief that their father always saw Takaya as the better son.

Moments with their brothers Kengo and Takaya, their sister Miyuki, and the loss of their mother reveal how that rivalry took root. Looking back from his final battle, Shinya is forced to confront the love, jealousy, and resentment that shaped his bond with the brother who became Tekkaman Blade.