Train Puzzle：Tohoku Shinkansen

The Tōhoku Shinkansen (東北新幹線?) is a Japanese high-speed Shinkansen rail line, connecting Tokyo with Aomori in Aomori Prefecture for a total length of 674 km, Japan's longest Shinkansen line. It runs through the more sparsely populated Tōhoku region of Japan's main island Honshu. It has two spur lines, Yamagata Shinkansen and Akita Shinkansen. The line is operated by East Japan Railway Company (JR East).