The “Retro Flower Cafe,” a collaboration between the TV anime *Mob Psycho 100 III* and Collaboration Cafe Honpo, will be held at the Akihabara and Osaka Nipponbashi locations from September 18 to October 18, 2026. In addition to a total of 16 collaboration menu items featuring newly drawn illustrations adorned with flowers, original merchandise—including L-size bromides and coasters given with every order, as well as a total of 7 different types of original goods—will be available.