At East Oizuki Academy, Chako and her friends form the Cosplay Association, the newest and most talked‑about team in Japan. Fresh off a string of victories in local contests, they aim to dominate the Cosplay World Series. However, the club struggles to stay afloat: low membership and a shortage of sponsors threaten to derail their ambitions. Undeterred, the spunky girls battle pervy newcomers, fierce rivalries, costume mishaps, and romantic entanglements, all while striving to reach the World Series. As they suit up, the clothing flies, but their determination remains unwavering.