This is probably the story of a mixed-race brother and sister who separated from their parents and struggled to survive among the ordinary people (probably they cannot be called ordinary people), and then returned to the ethnic group. My brother is the Kurosawa Formation, also known as Gin, so I have to whitewash some people in the organization and avoid those who are uncomfortable.
The male protagonist is probably Akai Shuichi, but the female protagonist is the kind of man who is dying at the same time as his brother and will only care about his brother. Yes, he is the one who controls the dead brother.
The dragon clan has a private setting. It is set that Uesugoshi is still the head of the family even before he runs away. Minamoto Girl is not instigated to rebel, but is picked up together. Of course, the enemies are still the fierce ghosts and Helberg.