Born under a prophecy that will liberate and unite Japan, Sarasa has had to take her brother Tatara's place as the "Boy of Destiny." Fighting for the oppressed, Sarasa journeys across Japan to gain allies and defeat her enemies--all while keeping her identity a secret!
After Sarasa and Shuri are separated in the flood, a shocking battle takes place and important secrets are revealed. In Seiran, Sarasa helps the rebels with the flood recovery effort and is reminded that no matter how hard she pretends otherwise she is still an ordinary girl.
Asagi stages his own mock execution and Sarasa saves him. He is taken back to the ship where Nagi nurses his wounds, but Sarasa begins to suspect foul play.