Title: Hininden Gausu
Japanese Title: 緋忍伝 呀宇種(ガウス)
Synonyms: Hininden Gauss
Released Date: Dec 22, 2005
Princess Kurama was confined in a castle. She tried to escape from the castle with her guardian Oka. However, Gensai notice it, and ordered Shura and Dodorome to take her back. Finally, she was caught by them. On their way back to the castle, Princess Kurama jumped from the cliff, and shouted the moon to summon Gauss.
On the other hand, it is present day. Nakamura Daisuke is enjoying a date with Hazuki. At the very moment he tries to confirm their love, his mark on the neck shines, and he is swallowed into the moon. He meets Princess Kurama. However, while he is left alone for a while, Dodome deceives him, and takes him to the castle.