@wrzlbrnft@troet.cafe The route as depicted (note that that was 25 years ago) is Tōkyō->Kawasaki->Shitte->Hama-Kawasaki->Tsurumi->Chigasaki->Hashimoto->Hachiōji->Takasaki->Oyama->Tomobe->Abiko->Narita->Chiba->Soga->Hatchōbori. A significantly longer route is possible these days (the area is continually expanding to match the Suica expansion), and the rule states it is technically not required to complete the trip on the same day, but I don't think you'd be allowed to overnight within the ticket area… Japanese Wikipedia states such overnight trips are usually taken on New Year's Eve when trains run on special all-night schedules