Nakau is a Japanese chain restaurant in Sapporo that serves gyudon, udon, and soba. It sits in a building that also houses a rental car office and Fitness 24. Customers choose from a kiosk, hand the meal ticket to staff, and a Korean menu option is available. The lunch special runs from 10 a.m. to 5 p.m., and the restaurant is open 24 hours, so meals are available at 5 a.m.