モモカの家でホームパーティーが開かれることに。リン、ミツキ、シオリはオシャレアクアマリンでかわいい浴衣姿に変身！正彦先輩もやってきてモモカはドッキドキ！そんな中、モモカの妹・スミレの友達がアキラメストにされてしまう。マジマジョピュアーズ！は４人で、いざアキラメストをピュアライズ！
A house party is held at Momoka's home. Using the fashion aquamarine, Rin, Mitsuki and Shiori transform into cute Yukata's. Masahiko also comes and Momoka's heart pounds. Meanwhile, Sumire, Momoka's little sister, has her friend turned into an Akiramest. Will the 4 be able to purelize the Akiramest.
