Hoshi no Oujo: Uchuu Ishiki ni Mezameta Yoshitsune

Her brother Shanaou was killed by a member of the Heike clan. For vengeance and to restore the Minamoto clan, the protagonist Sakurako vows to destroy all the Heike. Introducing herself as Shanaou in place of her late brother, along with her childhood friend Kisanta she goes off to Kurama Temple for training. One day a merchant named Kichiji appeared in front of them. He had been told to come and pick them up by order of Fujiwara no Hidehara. In order to defeat the Heike, they couldn't afford to stay at this tranquil temple any longer... So Sakurako decided that they should go to Oushuu Hirai...