The second collaboration between “The Idolmaster SideM” and Daimaru Matsuzakaya Department Store, titled “THE IDOLM@STER SideM × DAIMARU MATSUZAKAYA VOL.2,” will feature a pop-up shop starting October 28, 2026, at the Daimaru Tokyo Store, and at the Daimaru Umeda Store starting November 18. The event will feature apparel and accessories showcasing newly drawn visuals reminiscent of a magazine photo shoot, a special collaboration with Aki Akane, and a custom charm project. Customers who spend 3,300 yen or more will receive an original clear card.