I tried the rarest overnight sleeper train in Japan from Okayama to Tokyo. There are only two Suite rooms available on the Sunrise Express. Self-assigned rooms can be reserved only from the Midorinomadoguchi ticket booth. The suite is an unofficial term given by the Japanese train community and hence the quotation marks. Thank you for your understanding.
Fare: 21,670JPY/190USD
Route: Okayama-Tokyo
Train: Sunrise Izumo Sleeper Express
Seat: Single
Experience: best sleep
Links
Alo Japan.