Akeno Misaki, nicknamed Mike, is a student at Yokosuka Girls' Marine High School and the captain of the destroyer Harekaze. She carries the trauma of losing her parents in a storm at sea during her childhood, an event that instilled in her a deep fear of lightning and thunderstorms. Rescued by the Blue Mermaids, she made a promise with her childhood friend Moeka China to join that organization together. Mike embraces the belief that comrades at sea are like family, a philosophy that drives her to protect her crew above all else. She is cheerful, optimistic, and notably lucky, often reassuring others with phrases like "We'll figure it out!" Despite struggling with mathematics, she excels in practical skills, intuition, and remembering names, giving each crew member a unique nickname. Her leadership is tested when her ship is falsely accused of mutiny, forcing her to evade larger vessels like the Musashi using unorthodox tactics. Her relationship with deputy captain Mashiro Munetani initially clashes due to their differing styles, but they grow to trust each other. Mike stands 152 cm tall with light brown hair often styled in pigtails and blue eyes. She enjoys canoeing, curry, and pudding, but dislikes raw oysters. Her journey includes overcoming self-doubt, freezing under pressure, and ultimately rallying with her crew to rescue Moeka, symbolizing her growth as a captain who balances responsibility with her deep sense of family at sea.