Ep. 4: Milky Holmes Seek One-Hit Wonder Status at Sakiko Kirumiya's Castle

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The girls arrive at a castle owned by idol Sakiko Kirumiya while searching for accommodation. Intrigued by rumors of luxury, they enter a swimsuit contest stamp rally to become one-hit wonders themselves. Sakiko traps Marine in an iron mask after learning she wishes to continue her career. With assistance from the Feathers, the group collects nearly all stamps. They confront Sakiko, who is possessed by the third Element, Shout, during a Rock Quiz show to secure the final stamp. Marine’s determination to keep singing breaks her free from the mask, resolving the conflict.