Akechi (明智) is a faction in Sengoku BASARA.
They were later disbanded or absorbed again by Oda army.
In Anime Edit
Akechi Clan was loyal to Oda, taking Nobunaga's dream of conquest to the paper. They later turned their backs on Oda and tried to assassinate him, but were foiled by the intended target himself. They were defeated by Katakura Kojūrō and his part of Date army, seemingly killing Mitsuhide. However, Mitsuhide survives and appears as the monk named Tenkai in Sengoku BASARA The Last Party.