Ep. 4: Kinshiro Renews Oath as Binan High Students Turn Into Children

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Kinshiro recalls a childhood wish made with Atsushi on a shooting star while renewing his vow for world domination in the student council room. Simultaneously, the Earth Defense Club meets at Kurotama Bath to discuss the meaning of youth. The following day, every student at Binan High is transformed into a child. Consequently, the Battle Lovers must confront a new adversary despite their reduced size. This episode explores the contrast between Kinshiro's ambitions and the club's reflections on growing up, set against the chaotic backdrop of the sudden transformation affecting the entire school population.