S1·E44 The Assassination of Shingen

Usami, a general of the Nagao family, sends Heizo to Suruga to see Toraoumaru, Yu's half brother who is also the bereaved child of the Suwa Family. Heizo and Toraoumaru, harboring resentment against the Takeda clan, infiltrate to Kai. Having heard that strange young monks are seen around Shingen, Kansuke is suspicious.