. "M-line Memory Vol.21 is a fanclub-exclusive DVD featuring former Morning Musume members Takahashi Ai's and Niigaki Risa's birthday events, which both took place in September and October 2015. The deadline for M-line Fanclub members to pre-order the DVD was on November 26, 2015."@en . . "Birthday Event"@en . . . "2016-01-28"^^ . "DVD"@en . . . . "M-line Memory Vol.21"@en . . "M-line Memory Vol.21 is a fanclub-exclusive DVD featuring former Morning Musume members Takahashi Ai's and Niigaki Risa's birthday events, which both took place in September and October 2015. The deadline for M-line Fanclub members to pre-order the DVD was on November 26, 2015."@en . "DVD Cover"@en . "Kokka24jp-img431x599-1453982402nldaaj30904.jpg"@en . . "black"@en . "Kokka24jp-img431x599-1453982402hygnhb30904.jpg"@en . . "2015-09-26"^^ . . "DVD Back Cover"@en . "2015-10-20"^^ . "DVD"@en .