Morning Musume.'19 Sato Masaki Birthday Event

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.