Astray's Blade
Sei and Reiji must go through Nils in order to continue their quest for the championship. Desperate to prevent the duo from advancing, Baker offers to have PPSE sponsor Nils, but knowing very well not to trust her, he arranges for a secret meeting with Sei and Reiji to extract the secrets of Plavsky particles from them.
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More from this season
S1 E1
Sei and Reiji
Sei Iori is a talented Gunpla builder, but lacks the confidence to become an effective fighter in a Gunpla Battle. One day, he meets Reiji, a mysterious red-haired boy, who displays his exceptional skills as a Gunpla Fighter by defeating Susumu Sazaki with Sei's newly constructed Build Strike Gundam.
S1 E2
The Crimson Comet
As Reiji copes with adjusting to Tokyo life, he picks a fight with school council member Monta Gonda. Sei and Reiji defeat Gonda in an exhibition Gunpla Battle, but are immediately bested by Tatsuya Yuuki and his Zaku Amazing.
S1 E3
Full Package
Sei completes an upgrade to the Build Strike Gundam while Mr. Ral gives Reiji an orientation on Gunpla Battle.
S1 E4
Gunpla Idol Kirara
Sei falls in love with a mysterious girl who is into Gunpla, unaware of her true intentions in Gunpla Battle.