The first episode of , titled " Sei and Reiji ," originally aired on October 7, 2013. It serves as a vibrant introduction to a world where "Gunpla Battles"—simulated combat using plastic Gundam models—have become a global phenomenon. Episode 1: " Sei and Reiji " Summary
: The episode is packed with cameos and references, including Mr. Ral , a character clearly inspired by the iconic Ramba Ral from the original 1979 series. Production Spotlight Directed By : Kenji Nagasaki. Theme Song : "Nibun no Ichi" by BACK-ON. Gundam Build Fighters Episode 1
The premiere introduces , a talented Gunpla builder who lacks the piloting skills needed to win battles. His life changes after a chance encounter with Reiji , a mysterious boy with extraordinary natural piloting instincts. Together, they form a team: Sei builds the models, and Reiji fights with them. The first episode of , titled " Sei
: Sei is pressured by a rival named Sazaki , who wants to use Sei's superior Gunpla for himself. Ral , a character clearly inspired by the
: You can watch the full series on Crunchyroll or via Prime Video .
: Reiji takes control of Sei’s Build Strike Gundam and achieves a stunning victory over Sazaki's Gyan , despite having never piloted a Gunpla before.
Watch the first intense battle between the Build Strike Gundam and the Gyan here:
