Morning Musume.'17 Sato Masaki Birthday Event (2017)
Premiere 8 May 2017 | モーニング娘。'17 佐藤優樹 バースデーイベント | 68 min
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Variety of events at Differ Ariake, Maa-chan has; science class, mystery box, questions, and Maa-chan's Solo Performances.