On this occasion, the Iga lineage cooperated with Ieyasu for getting across Iga and, because of the merit of Hanzo HATTORI, who was the head of Iga at that time, 'Hanzomon' (Hanzo gate) was constructed in Edo-jo Castle.
この時、家康の苦難の伊賀越えに協力したのが伊賀流であり、その際の伊賀の棟梁、服部半蔵の功で江戸城に「半蔵門」が作られる。