Fans of mecha anime will love to discover the origins of one of the most heroic characters in the Mazinger series.

When a UFO from the Vega Alliance arrives on Earth, humanity faces its biggest threat in an oncoming Alien invasion. But their hope arrives in another Alien, Duke Fleed, a refugee of the planet Fleed who finds his home in Japan. Duke pilots the mighty Grendizer, a weaponized Mech to fight off the Vega forces. Along with his best friend and partner Koji Kabuto, they fight to free Earth from the terror of the Vega forces.

Written by the legendary Go Nagai and illustrated by 8KEY, Grendizer: U The Inception modernizes the iconic story of the lost prince who shoulders the responsibility to protect his new home from the same Empire that destroyed his last.

Featuring a prequel story by Tatsuto Higuchi not told before, this manga is an adaptation of the anime Grendizer U.