The war between the Heike clan and the Genji clan continues. This time, Nozomi has to fight a powerful supernatural enemy and make a choice: protect her friends and stay by Kurou's side, or choose her first love, Masaomi, which is the leader of the Heike, and her enemy.

Five female pirates pilot the Sol Bianca, a starship with a higher level of technology than any other known. With it, they seek out riches, such as the Gnosis, an legendary item of power, and pasha, the most valuable mineral in the galaxy. Along the way, they must consider a stowaway's quest to save the one he loves, and seek revenge against those that have wronged them.

An OVA adaptation of the climactic part of Saiyuuki Gaiden.