Wikipedia
Hokutosei
The was a limited express sleeping car train service in Japan which operated between Ueno Station in Tokyo and Sapporo Station in the northern island of Hokkaido, taking approximately 16½ hours. It was operated jointly by East Japan Railway Company (JR East) and Hokkaido Railway Company (JR Hokkaido) from March 1988. The service became a seasonal service from the 14 March 2015 timetable revision, and was completely discontinued in August 2015.