Toimuro is one of the last two Modern Era provinces (the other being Hiromaguchi), accessible after taking control of Kibakuguchi. Taking over Toimuro unlocks the ship (requires 100,000 and 20:50:00 to take) leading to the Postmodern Era continent map, and towards the first two Postmodern Era provinces, Cai Chet Nui and Rung Chien Dau.
This province, along with Hiromaguchi, appears to take place in an equivalent of the island of Honshu. Emperor Hisao Hito is based on the real life Hirohito.
If previous sectors acquired by negotiation:
Emperor Hisao Hito wants to negotiate the terms of a pact with you.
If at least one sector taken by force:
Emperor Hisao Hito will unleash the power of his magnificent empire upon you!