**Water Challenge Cafe in E-DINER Ikebukuro** Starts on April 1!

From April 1 to April 19, 2026, the Water Challenge Cafe will be held at E-DINER Ikebukuro, featuring collaborative menus inspired by popular characters such as Sumanai Sensei and Money. Customers who place orders will receive limited-edition coasters, and various merchandise such as acrylic stands and pin badges will also be available for sale.