Zenshin claims to be the half brother of Mirumoto Mareshi, the family damiyo. He appeared in the empire late in 1171, and no one had previously seen him outside of Dragon lands.
Neither Mareshi, nor his father Mirumoto Daini, have commented on this, …
No-one knew of Sio, whom returned as the wife of Otomo Takeshi during an extended stay in the Dragon mountains. She is as distant as she is beautiful, and has earned the nickname "The Mountain's Stare" for the distrubing manner in which she seems to see …