There is a 0-calorie soft serve ice cream shop in Jonan Ward. It stands quietly, so you need to be careful not to overlook it when driving by at night. If the sign shaped like a soft serve ice cream is displayed in front of the shop, it means they are open for business. The taste is delicious. It's nice to buy some and enjoy it while driving to Yuzuriyama, where you can feel the cool breeze and see the night view.