Araki Mataemon was a very strong warrior, and his feud against the samurai Kawai Matagorō is one of the most famous in Japan. Matagoro killed Gendayu, the little brother of Mataemon's brother in law, Watanabe Kazuma. Becoming a murderer out of jealousy for a childhood friend, Matagoro fled in another domain, using friends of his father and his lineage linked to Tokugawa Ieyasu. It was somehow a complicated matter, as it seems at that time, a law from Toyotomi Hideyoshi allowed a little brother t...