Hakodate – Komagatake – Oshamambe (officially an element of the Hakodate Honsen)

There are 2 lines between [Hakodate-] Nanae and Ônuma. The line through Shin Hakodate Hokuto (former name Oshima Ôno) is the Hakodate Main Line (Hakodate Honsen), the direct line not serving Shin Hakodate Hokuto and Niyama is also known as the Fujishiro-sen.

For the 2 lines between Ônuma and Mori see 1) Hakodate Honsen, and 2) Ônuma - Shikabe - Mori (also known as the Sawara-sen).