At the Early days in the Human-Siren war, a large aircraft deployed by the sirens suddenly appeared over Zeke's hometown and was instantly destroyed along with his little sister right in front of his eyes. A couple of years after that tragedy, he is now a naval pilot and went on alot of missions with his wingmen and Azur lane shipgirls. However hunting down that large aircraft which is codenamed "Gleipnir" by the high command is still in his mind.