The was a siege in 1561 of the castle of Moji in Japan. The castle belonged to the MÃ Âri clan, whose capital was the city of Yamaguchi.
The original castle was built by à Âuchi Yoshinaga (Sorin's younger brother), who was forced to kill himself in 1557 with the advance of Mà Âri forces. Mà Âri Motonari captured the fort in 1558. Otomo Sorin recaptured the castle in September 1559, but later the Mà Âri, led by Kobayakawa Takakage and Ura Munekatsu, quickly recaptured the castle.
In 1561, forces under à Âtomo Sà Ârin attacked the castle in alliance with the Portuguese, who provided three ships between 500 and 600 tons, each with a crew of about 300 and 17 or 18 cannons. This is thought to be the first bombardment by foreign ships on Japan.
The bombardment permitted the à Âtomo troops to establish themselves around Moji castle. After expending their ammunition, however, the Portuguese withdrew.
The castle's defenders nevertheless managed to break the siege lines and reinforce the castle. Ã Âtomo led an all-out assault on the castle on 10 October 1561, but the assault failed, and the castle finally remained in MÃ Âri possession.