A Happy Pancake Ikebukuro is a cafe in Ikebukuro, Tokyo that serves souffle pancakes and coffee. The original pancake comes with butter on top, and the cafe latte has low acidity. At the entrance kiosk, you take a numbered ticket and check the remaining wait count with a QR code; a wait of 10 people can take about 40 minutes. The store is smaller and has fewer seats than other branches.