Kuniharu TSUZUKI, the lord of Kumonosu-jo Castle (Spider web Castle) was betrayed by Fujimaki, the lord of Kita no Tachi (North Castle), which made him decide to confine himself to the castle.
蜘蛛巣城城主・都築国春は北の館城主・藤巻の謀反に遭い、篭城を決意する。