OVA
Description
Moeka China, nicknamed "Moka" by her childhood friend Akeno Misaki, captains the Musashi, a major nautical training vessel crewed by elite students, reflecting her academic prowess and leadership. She possesses light gray shoulder-length hair, purple eyes, and a small red clip on the left side. Her standard attire is an officer's uniform: a black skirt, light black tights, and black boots, sometimes complemented by a captain's hat.

Her personality showcases a natural command aptitude and unwavering diligence, embodied in her motto: "There is no genius that beats hard work." She consistently supports and motivates Akeno in their shared aspiration to join the Blue Mermaids, the maritime safety and rescue organization. This dream ignited nine years before the main events when she and Akeno, inspired by the Yamato, pledged to become Blue Mermaids together. Though separated by different schools temporarily, they reunited at Yokosuka Girls' Marine High School's opening ceremony, where Moeka was appointed Musashi captain. She reassured Akeno their goal remained achievable despite serving on different ships.

During a routine exercise, the Musashi strayed off course. Commanding from the bridge, Moeka witnessed the main gun firing unauthorized at a cargo freighter. Attempting to reach the artillery control room, she encountered crew members infected with the RATt virus, forcing her and a small group to retreat and barricade themselves on the bridge. After partially repairing the radio, she sent a distress call. Akeno received the signal aboard the Harekaze but an initial rescue attempt failed. As the Musashi threatened to spread the virus via the Uraga Channel, Moeka used a signal lamp to warn pursuing ships—including the Harekaze—not to approach due to remaining battleship ammunition. The Harekaze responded via Morse lamp, pledging to save the Musashi's crew. Following a naval engagement, the Harekaze crew boarded the Musashi, subdued the infected personnel, and reunited Moeka and Akeno.

One month after the viral outbreak, Moeka aided Akeno in preventing the Harekaze's decommissioning and crew reassignment, though this unauthorized intervention resulted in disciplinary action from the principal.

In later anti-piracy operations, Moeka demonstrated exceptional tactical coordination alongside Mashimo Munetani, who oversaw the mission from the Musashi, earning admiration from fellow Yamato-class commanders. During a crisis where pirates hijacked a floating water purification plant and sea fortress, Moeka joined the Blue Mermaids and multiple maritime high school fleets—including the Harekaze II—to prevent the facilities from linking. She participated in the combined assault that disabled the pirate-controlled fortress.

Additional details: Born in Matsumoto, Nagano Prefecture. Height: 158 cm. Blood type: AB. Birthday: July 25 (Leo). Hobbies: Canoeing. Favorite food: Hayashi rice. No disliked foods or academic subjects.