Saito Yoshitatu’s rebellion against his father, Dosan in winter, Koji 1st (1555) triggered the conflict between the father and the child which devided Minonokuni in two. According to “Minonokuni Sho-Kyu-Ki (history of Minonokuni)”, the powers to the side of Dosan was less. Mitsuhide’s uncle, Mitsuyasu said that he was obliged to Dosan, but that Mitsuyasu was righteous. He decided not to help either side and just sent Mitsuhide to Yoshitatu. In the next April, Saito Dosan was killed in the Magaragawa battle and Yoshitatsu’s side won the conflict. The movement of Mitsuhide during this battle was uncertain. As the result, the Akechi clan who was originally on the side of Dosan got into the difficult situation. Moreover, Mitsuyasu never abandoned his loyalty to Dosan, so in September in the same year, Yoshitatsu’s military approached the Akech-jo Castle. 800 people of the Akechis including the retainers were besieged, and after the fierce attacks, the castle finally fell. Mitsuyasu, before committing suicide, left the message to Mitsuhide, saying that all the Akechs had died but Mitsuhide and hoped for the revival of the Akechis. In this way, the Akechis perished leaving the only heir, Mitsuhide. In the ruins of Akechi-jo Castle in Seta, Kani City, there are seven mounds for the souls of dead soldiers and a ghost tower called Rokushinkenzoku (family) which the villagers secretly built still remains. The main part of Akechi-jo Castle now has become a water pond, so the old state does not remain. But in the ruins of the castle, there are some remains which are said to be East-Demaru, Karamete-Kuruwa, Ni-no-Magewa, San-no-Magewa, West-Demaru, Inui-Kuruwa.