By either fate or deliberate action on Kinzo's part, she was one of the orphans selected to work at Rokkenjima as servants a fact that confused her fellow orphans/co-workers due to having perceived privileges (such as a room all to themself and only working weekends so that she can attend school along with Jessica) as well as being significantly younger and having traits unbecoming of a servant such as clumsiness and forgetfulness, becoming an instant target of bullying. They were then taken to the Fukuin House orphanage and under the alias Sayo Yasuda, although Fukuin had a practice of 'blessed names' in which they combine the first kanji of the child's given name (in this case '紗') and the kanji for sound '音', giving us Shannon. Unbeknownst to the other island inhabitants, the child survived its fall off the cliff, but was gravely injured with particular damage to the sex organs, being reassigned from male to female and raised as such. The child later fell off of a cliff along with a servant nineteen years ago. The child was given to Natshui as a sign of atonement, but she rejected it Natushi viewing it as a sign of her failure of her womanhood. Yasu (born Lion Ushiromiya) was the child of Kinzo Ushiromiya, and was conceived through incest with Kinzo's daughter Beatrice Ushiromiya.

Yasu twitter