At the suggestion of Missy, it was decided to hold a training camp. However, when she arrived at the training camp, Sumino and everyone in Akadama were covered in wounds. Appearing in front of the astonished Kotone and the others is Misaki from Kurodama! That's no wonder, the whole area, including the training camp, was privately owned by Misaki's parents' house. In the basement of this training camp, there is a secret special training ground built by Misaki. And Asuna and the others will also take on the challenge of a special training course...