Giant Marlin

This Giant Marlin was once a summon during the Third Shinobi World War. For some unknown reason, the marlin did not return to its birthplace. After the war, it would attack any boats in open water. Yusuke and his father tried to catch it but failed and resulted in Yusuke's father's death. When [Naruto Uzumaki, Aoba Yamashiro, Might Guy and Yamato set sail for the Land of Lightning, the marlin attacks and they meet Yusuke, who is trying to capture the beast. The next day, they help Yusuke with the right equipment to capture the marlin, avenging his father. After it's capture, Naruto finds a Fūma Shuriken on it's forehead and pulls it out. Soon after, the marlin returns home.