Kanto (関東地方, Kantō-chihō) is a fictional region based on the real-life Kantō region. In the aftermath its war with Kansai, Kanto turned out to save and re-build the latter, and because of it is revered by its inhabitants.
History
"Long ago, war broke out between the regions of Kanto and Kansai, splitting the country in two. Kansai became a vassal state of Kanto and developed characteristic advancements."