Two routes, one train (until Okayama)
Sunrise departs Tokyo 22:00 coupled as 14 cars. At Okayama (6:27 AM), the train splits: 7 cars continue as Sunrise Seto to Takamatsu (Shikoku, arr 07:27), 7 cars become Sunrise Izumo to Izumoshi (arr 09:58). Return trips mirror — from Takamatsu 21:26 and Izumoshi 18:51 meet at Okayama and continue as one.