Sa, Shunki

茶春姫

The granddaughter of Enjun (Sa-Taihou), she is unaware that her parents were murdered nine years ago by her cousin, Sakujun Sa. Her grandmother, Eiki, sealed her ability to speak when she was a child, so she communicates primarily through writing.
Because she descends from the main Sa line through Enjun, she poses a threat to Chuushou and other branch family members during their power struggle. For her own protection, she is kept hidden and watched over by Shourin and Youshun, under orders from Ensei Ro.
Later, she uses her strange power to rescue Kokujun together with Shurei. When Kokujun accepts the burden of leading the Sa clan, she vows to be always by his side.