The Hokutosei was a sleeper limited express train that debuted in 1988 to coincide with the opening of the Seikan Tunnel, operating between Ueno and Sapporo. It was renowned for its luxurious features, including private compartments and a lounge car.
In March 2008, during a revision of the Hokutosei's operations to a single round trip, the train composition was altered. Cars 1 to 6 were owned by JR Hokkaido, while cars 7 to 11 and the power car were owned by JR East.
From February 2011, due to reasons such as maintaining reserve trains, car 2 was modified to include open-plan B class sleeping cars, and prominently featured the unique OHANEFU24-500 series cars.
With the timetable revision in March 2015, the regular operation of the Hokutosei ended, and subsequent operations as a temporary train until August were conducted exclusively with JR East-owned cars, marking the end of mixed composition operations during the same period.
- Recreates the appearance of the Hokutosei mixed composition of JR Hokkaido and JR East cars with car 2 switched to open-plan B class sleeping areas from 2011 onwards.
- Newly manufactured TR217 (with cylinder) with a changed pantograph shape.
- The OHANEFU25-200 series reproduces vehicles with emergency exit water guards intact.
- The OHANEFU25-200 series comes without train mark printing or light circuit board.
- The OHANEFU25-200 series retains the original AU77 form, while other AU76/77 series on the cars newly recreate models with two fans.
- The AU76/77 series coolers on each car are reproduced in gray for JR Hokkaido cars and silver for JR East cars.
- Car numbers are selectable with a compatible transfer sheet (included in the basic set).
- New power collection system and black wheels adopted.
- Compatible with Interior Lighting Kit Tomix 0733(for OHANEFU 25-200) and Tomix 0731 (for the other cars)
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