Ise Electric Railway

At its height, Iseden operated three train lines, two of which it planned and built, that serviced the cities of Yokkaichi, Tsu, Suzuka, Matsusaka, Ujiyamada, and Ōgaki.

The plan worked out by the company called for buying an existing, out-of-use Kokutetsu bridge crossing the considerably wide rivers and then building a relatively short dual track section the rest of the way to Nagoya Station.

Kumazawa stepped down, labor strife arose, and the company's image was heavily damaged; this made the Nagoya-extension plan impossible at the time and so it was put off.

On top of these problems, Iseden had invested too much money during the late 1920s and, due to the worldwide Great Depression starting in 1929, the company often found itself in financial trouble.

However, since Iseden was unable to extend its Main Line north to Nagoya, this joint plan never came to fruition and tension arose between the two companies.

Ridership on the Iseden Main Line did increase, but not as much as hoped and not nearly as much as the increase that the Sankyū Main Line saw at that time; this was simply because Sankyū linked with Osaka, a major city, but Iseden only linked with Kuwana and Ōgaki which are much smaller cities.

Eventually a merger battle broke out with Sankyū aiming to acquire Iseden in hopes of offering direct service between Osaka and Nagoya.