|M-line Memory Vol.21|
| DVD by Takahashi Ai|
|Released||January 28, 2016|
|Recorded|| September 26, 2015|
October 20, 2015
| Takahashi Ai|
Niigaki Risa DVDs Chronology
|Previous||Morning Days 8 - Takahashi Ai, Niigaki Risa Fanclub Tour in Hakuba|
|DVD Back Cover|
The deadline for M-line Fanclub members to pre-order the DVD was on November 26, 2015.
Takahashi Ai Birthday Event HAPPY B'DAY TO Meee.Edit
Takahashi Ai Birthday Event HAPPY B'DAY TO Meee. (高橋愛バースデーイベント HAPPY B'DAY TO Meee.) is Takahashi Ai's 2015 birthday event. It took place on September 26, 2015 at Shibuya Shidax Culture Hall.
- Ooki na Ai de Motenashite
- "Takahashi Ai Tries to Dance with Earnest" Corner
- Souda! We're ALIVE
- Takahashi Ai
- MC: Suzuki Keita
Niigaki Risa Birthday Event 27Edit
Niigaki Risa Birthday Event 27 (新垣里沙バースデーイベント27) is Niigaki Risa's 2015 birthday event. It took place on October 20, 2015 in TOKYO FM HALL.
- Performance Varies
- Yamete yo! Sindbad - with Ikuta Erina