The “Horimiya” 15th Anniversary Collaboration Cafe, “Horimiya CAFE: Katagiri High School Culture Festival,” will be held at the motto cafe Ikebukuro location starting October 14, 2026. Details have been released regarding all 16 food, dessert, and drink items that will be served during the first half of the Tokyo event, as well as the takeout menu, special perks, and pre-release merchandise.