Morning Musume.'19 Sato Masaki Birthday Event
モーニング娘。’19 佐藤優樹 バースデーイベント
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Variety of events at Shinagawa Stellar Ball, Maa-chan has; talks, "Questions for Maa-chan" corner, "Maa-chan Challenge" corner, and Maa-chan's Solo Performances, including; "rin" (輪「rin」) an original song by Sato under the name MASAKI.
