Gundam Build Fighters: GM no Gyakushuu

Synopsis

As the Yajima Stadium's grand opening approaches, Nils Nielsen convenes an exhibition match featuring his innovative large-scale battle system. Sei Iori, eager to showcase his enhanced Build Strike Cosmos, finds himself and his friends trapped within the stadium by an unknown entity. A mysterious group seizes control of the facility's systems, challenging Sei and the others to a high-stakes Gunpla Battle.