He was a retainer of Okudaira Sadamasa and member of the Nagashino garrison when the fortress came under siege by the forces of Takeda Katsuyori. Already renowned for his bravery and known for his knowledge of the surroundings, he volunteered for the extremely dangerous mission of sneaking through the siege lines to request aid from Tokugawa Ieyasu in Okazaki. After successfully warning Tokugawa, however, he was captured by the Takeda on his return to Nagashino. In 1923, a railway station opened near Torii's deathplace was named Torii Station.