This article is about a/an location in Kamen Rider Build.
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Seito (Build)

Seito and its emblem.

Seito (西都 Seito) is the western region of Japan in the World of Build, created as a result of the Skywall, and is led by Prime Minister Masakuni Mido. Its system of governing and political goals are based on economic recovery, doing so in one effort by sending its young adults across the world to gather technical knowledge. The capital's crest of Seito is a star with a grain of wheat looped around it.

Seito is made up of the islands of Shikoku, Kyushu, and western Honshu.


In the bid to dominate Japan, Seito was the prefered choice of Juzaburo Namba, CEO of Namba Heavy Industries Ltd. To that end, Namba gave Mido his support with the full expsenses of Namba. The Phantom of the West

Seito initially stood as neutral when Hokuto invaded Touto. Eventually, however, Mido, knowing that the bulk of Hokuto's forces were engaged in Touto, sent Seito Guardians, led by the nation's own Kamen Rider, to seize Hokuto just as the proxy battle between Hokuto and Touto ended with the victory of Touto's Kamen Rider Build over Hokuto's Kamen Rider Grease. Sold out by Blood Stalk, Hokuto Prime Minister Yoshiko Tajimi was ordered taken into custody by Mido. Victory of Tears

Mido followed up the subjugation of Hokuto by declaring war on Touto. Having been provided with the new Kaisers created by Nariaki Utsumi based on the system developed by Kaisei Mogami: Engine and Remocon Bro's, Mido presented Seito's fighting prowess in a message broadcast to the Touto government, presenting Seito's Guardians and Kaisers at the Sawatari Farm. Seito's Kaisers proved superior to both Hokuto's Hard Smashes as well as the Kamen Riders representing both Hokuto and Touto. They were second only to Seito's own Kamen Rider, Rogue, who made his way to Touto. The Phantom of the West

Having had Touto's government office bugged, Mido learnt from a conversation between Taizan Himuro and Sento Kiryu that, in light of Gentoku's new allegiance to Seito as Kamen Rider Rogue, they were planning to move the Pandora Box to a secure location. Before this could happen, Mido sent Gentoku to claim the Pandora Box for Seito. A Man Called Rogue



See also