Birth year unknown. A warrior of Bizen Province who served as a senior retainer of Ukita Hideie. His baptismal name was Joan. A devout Christian, he actively promoted missionary work within his domain. At Sekigahara in 1600, he fought as a mainstay of the Ukita forces, but the Western Army lost. After the Ukita clan's attainder, he became a ronin and went into hiding in Chikuzen. In 1614, he answered Toyotomi Hideyori's summons and entered Osaka Castle with his sons, becoming one of the Five Generals of Osaka. He fought under a banner bearing the cross. After the Summer Campaign of 1615, his fate is unknown—theories include death in battle, escape to Kyushu, and flight overseas, but his body was never found. The Tokugawa shogunate conducted 'Akashi hunts' to find him but never succeeded.

A unique warrior who combined deep faith with martial valor. It is believed he refused to commit suicide in accordance with Christian teaching, and his steadfast devotion inspired awe from both allies and enemies.

The most enigmatic of the Five Generals of Osaka. His image fighting under the banner of the cross symbolizes the fusion of faith and arms in the Sengoku period. His disappearance from history remains one of the era's great unsolved mysteries.