Komachi is the sole service running on the Akita Shinkansen, using only E3 Series trains. Between Tokyo and Morioka, it couples with a Tohoku Shinkansen train set E2 Series. After Morioka, the Komachi service continues along former narrow-gauge tracks that have been converted to standard gauge. Because it then runs on tracks that have grade crossings, its maximum speed from Morioka to Akita is 130 km/h, compared to 275 km/h on the first leg.
The word komachi (小町) in Japanese means "belle" or "beauty".