Maasa fera partie du casting de la nouvelle comédie musicale de la troupe Engeki Joshi-bu ! Celle ci se nomme "NegaPosiPosi" et se déroulera du 3 au 20 novembre.
Casting : Sudou Maasa, Onoda Ayasa (engeki joshibu), Nashiki Chika, Yamagishi Riko, Ogata Risa, Asakura Kiki, Ono Mizuho (Tsubaki factory), Rena Ichioka, Kaga Kaede, Horie kidzuki, Takase kurumi, Maeda kokoro, Kanatsu Midzuki, Ono Kotomi, Kiyono Momohime, Kawamura Ayano, Yokoyama Rena, Yoshida Marie, Nishida shiori (Hello!Pro Kenshuusei)
| Dates | Lieux | Représentations |
| 03/11 | BIG TREE THEATER | 19H00 |
| 04/11 | BIG TREE THEATER | 19H00 |
| 05/11 | BIG TREE THEATER | 15H00 // 18H30 |
| 06/11 | BIG TREE THEATER | 11H30 // 15H00 |
| 08/11 | BIG TREE THEATER | 19H00 |
| 09/11 | BIG TREE THEATER | 19h00 |
| 10/11 | BIG TREE THEATER | 19h00 |
| 11/11 | BIG TREE THEATER | 19h00 |
| 12/11 | BIG TREE THEATER | 11h30 // 15h00 // 18h30 |
| 13/11 | BIG TREE THEATER | 11h30 // 15h00 |
| 15/11 | BIG TREE THEATER | 19h00 |
| 16/11 | BIG TREE THEATER | 19h00 |
| 17/11 | BIG TREE THEATER | 19h00 |
| 18/11 | BIG TREE THEATER | 19h00 |
| 19/11 | BIG TREE THEATER | 11h30 // 15h00 // 18h30 |
| 20/11 | BIG TREE THEATER | 11h30 // 15h00 |
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