Overnight trains are wonderful for traveling and saving a night's hotel. I used to take sleeper cars in China for distances that made sense (e.g. board at 9pm, arrive 7am). Some with shorter distances even optimized on sleep so that the train would stop for an hour outside the final station and arrive at a reasonable time in the morning. Unfortunately and similar with Europe, high speed rail has ended many of these schedules. On a side note, I've also failed to take this train multiple times in Japan due to its popularity: https://www.japan-rail-pass.com/japan-by-rail/travel-tips/su...