Ichiran Okayama Shimonakano is a 24-hour branch in Shimonakano, Okayama, serving tonkotsu ramen. Customers choose the broth richness, secret sauce, and noodle firmness, then eat at a concentration-focused counter. Orders are placed by picking a menu item from a ticket vending machine and writing preferences on an order sheet, with a wait of about 15 minutes at 10:30 a.m. on a Sunday. Lines form during both day and night, so wait times grow depending on when you visit.