The “as:9-nine- ARTEISIA Café,” a collaboration café based on “as:9-nine- ARTEISIA”—a spin-off of the game “9-nine-“—will be held at Cure Maid Café in Akihabara from October 10 to October 25, 2026. The café will feature food and desserts inspired by the in-game “Café Nine Ball,” as well as seven character-themed drinks. Customers will receive one limited-edition coaster (8 designs total) with each collaboration menu item purchased.