Ep. 4: Shu infiltrates the Neutral Zone outpost to defect from Rekka forces and join Back Arrow.

A flashback reveals Shu and Kai were sold as soldiers to Rekka fifteen years ago, prompting Shu to seek internal reform. In the present, the Four Friends breach a Lutoh outpost in the Neutral Zone while Sol Athin guides the Granedger through trader paths toward the northern Wall. Shu and Ren intercept the vessel with Rekka troops. Atlee and Arrow activate their Briheights to fight, while Elsha steers toward Bandkia. The Four Friends use decouple spray to stop the ship. Arrow clones his Briheight into four versions, defeating the enemies and restoring them to human form. Shu deduces Arrow’s lack of single conviction allows this power. He disables all Rekka weapons and Briheights, offering to join Back Arrow and Edgar Village. Impressed, Shu orders Ren to report his betrayal to Zetsu Daidan in the Rekka capital.

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