A pop-up store for the ATEEZ and HELLO KITTY collaboration “BLACK SERIES” will open on October 16, 2026, at MIL GALLERY JINGUMAE in Jingumae, Tokyo! Three types of figures that come with T-shirts, as well as hoodies, tumbler bottles, and stuffed toy keychains, will be on sale. Additionally, a random photo card will be given as a purchase bonus for every 8,000 yen (tax included) spent.