Asuna and her friends have come to the beach for a training camp to improve their teamwork. The purpose of this trip is to refresh, so everyone dressed in swimsuits and enjoys the holiday at sea in a more peaceful and laid-back mood than usual. However, as Kotone speaks lightly while she is playing, Asuna begins to wonder if she is truly suitable as Kotone's partner. Even after the training camp is over, Asuna continues to carry on. In the midst of this, Asuna loses her memory due to an accident during practice...! ?