A pop-up store for the anime “You and Me: Complete Opposites,” based on the popular manga by Aga-zawa Kōcha, will be held from September 12 to September 27, 2026, at three Sanseido Bookstore locations and online. A total of 10 items will be available, including acrylic keychains and snow globe-style acrylic blocks. For every 3,000 yen (tax included) spent, customers will receive a postcard.