In 1974, the New Blue Train 24 series 25 type, which adopted a two-stage B sleeper, was born to improve comfort and save labor. It features a stainless steel decorative band on the body of Blue No. 20.
In 1976, the A sleeper Orone 25 type, which is a private room for one person, and the 100 series, which has a fixed upper bed for the B sleeper and different window sizes on the sleeper side and the aisle side, appeared. Oshi 24-100 is a modified car from 14 series, and it was a white belt when it was incorporated into 24 series.
The 100s is a prototype of a vehicle belonging to the Shinagawa Passenger Car District (South China) around 1978.
Ohanefu 25-100, Ohanefu 25-200 ... Asakaze, Fuji, Hayabusa, Comet, Sea of Japan, Izumo, Seto (2 each for Izumo and Seto)