To commemorate the first anniversary of the game “Chaos Zero Nightmare,” a collaboration café called “Nightmare Café” with the maid café “Meidori-min” will be held at eight locations nationwide from October 16 to November 15, 2026. Food and drinks inspired by Rossweiss Blaze Bell Daria, a new character from Season 5, will be available. Customers who order a drink will receive a coaster, and those who order a set meal will receive a pin.