Mizuho, who continues to be absent from school without permission, was a lonely girl who lost her parents in a battle with phantom beasts when she was young. Her passionate teacher, Osako, organizes underwater training on the submarine Happy Dolphin Uzushio No. 2, which Mizuho's parents once rode, in order to bring her back to her training. Mizuho participates in her training to operate the submarine her parents were on, but... Bu kaynak metin hakkında daha fazla bilgi