Edo is a large land in Japan and the only area where the bugs doesn't rule over. Edo is the home to the Mushibugyo who protect the land from the bug monsters.
In the 6th year of the Kyouhou era (year 1721), by the order of Tokugawa Yoshimune, the 8th Shogun of the Tokugawa Shogunate of Japan, a "suggestion box" was made and put in Edo for the people to tell what they wanted. One of the many suggestion said that they wanted a group to protect them from the monster bugs and the Mushibugyo was made to protect Edo from the bug monsters.
- Edo is the only area that isn't being control by the bugs.
- Edo is where the main series is forces.
- Edo is a actually land that was part of Japan but later named Tokyo.