The Battle of Port Izumi was a battle between the Mongols under Khotun Khan and the Japanese forces under Jin Sakai—supported by the samurai army under Lord Shimura—at Port Izumi. The battle ended with a decisive victory for the Japanese side, with Khotun dead and his plan for an attack on the Japanese mainland cut short.
Battle[]
Following the Siege of Castle Shimura, Khotun Khan learned that the castle was taken from his grasp due to poison used by Jin Sakai, and learned to make the poison for himself. With this new effective weapon in his hands, the Khan decided to move on from Tsushima and use the poison to attack mainland Japan. Jin and his main ally, local thief Yuna, scouted out the port and deduced that the Khan intended to leave with the poison. To prevent this, they decided to attack the port during the next snow storm. To prepare, Jin's allies stole a hwacha to bombard the Khan's fleet, while Jin smuggled a letter to Lord Shimura, asking for his trust and to help him attack the port.
Once the snow storm arrived, Jin, Yuna and their other allies, Sensei Ishikawa, Masako Adachi, warrior monk Norio, and merchant Kenji, arrived outside the port. Although Lord Shimura's forces were not present, Jin refused to risk missing their only chance at killing the Khan while waiting for them, and began the attack after Yuna fired a signal arrow. While Kenji manned their siege weapon to fire on the Mongol fleet, the others attacked the Mongols head on, and were able to push towards the gates of the port. While the Mongols were distracted with his allies, Jin infiltrated a port and went to a watchtower to locate the Khan.
Just as Jin spotted Khotun at the manor house, Lord Shimura's forces arrived and engaged the Mongol forces, leaving the Khan alone. After making his way to the manor house, Jin confronts Khotun, who chastises him for rejecting his offers to surrender, claiming all the deaths could have been prevented if Jin submitted, and declared that the Japanese people would suffer. Jin then engaged the Khan in a second duel and was able to outmatch him in single combat, prompting Khotun to summon reinforcements and flee to his flagship.
Jin gives chase and gets onto the flagship before Khotun can sail away, and the battle resumed once more. Despite the aid of his reinforcements, the Khan is defeated by Jin. Jin impales Khotun with his sword, and the dying Khan declared that the Mongols would be remembered forever. Jin replied that he will be forgotten, and then decapitated the Khan, ending his campaign of terror and avenging the people of Tsushima. The death of Khotun Khan cripples the Mongol invasion, sparing mainland Japan from the Mongol forces, and allowing the Samurai to gain the upper hand.