To get their hands on the famous spiritual root, the three Yasha princesses must enter a territory surrounded by a powerful barrier. This will be an opportunity for them to ask themselves certain questions, but above all to obtain valuable answers.

Setsuna is kidnapped by Princess Aiya, daughter of the deputy shogun. Wanting to escape her studies, Princess Aiya begs Setsuna to be her body double for a day, but the princess's new tutor turns out to be Hisui posing as his older sister Kin'u!