The discovery of soldiers, cannon and ammunition on the ship led to the suspicion that it was intended for the conquest of Japan, and that the missionaries were merely to prepare the way for the soldiers. This was also said, falsely and unwarrantably, by one of the crew, and it enraged the Japanese Taikō, Toyotomi Hideyoshi, generally called Taicosama by Europeans. In consequence, he commanded on  December 8, 1596, the arrest of the Franciscans in the friary at Miako, now Kyoto, whither Philip had gone.
The discovery of weapons and soldiers aboard the ship fueled suspicions that it was intended for Japan's conquest, with missionaries serving as a mere prelude to the military force. This accusation, made falsely by one crew member, enraged Toyotomi Hideyoshi, known as Taicosama in Europe, leading him to order the arrest of the Franciscans at the Miako friary on December 8, 1596.