以成为偶像为目标的女高中生东优羽，她在学校为自己定了四项规则——“不要使用社群网站”、“不交男朋友”、“在学校保持低调”、“和来自东西南北的美少女成为朋友”，并和她们组成4人偶像团体。
遇播放卡顿或无法播放时，可切换线路播放
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