Sahnyu (흐르는 트윈 워터스, Twin Flowing Waters) is an organization, led by Tsuyuri Kawahiru, formed for the sole purpose of tracking down and killing Tsuyuri's older brother, Seireitou Kawahiru. Sahnyu is widespread, spanning several countries with agents in various places. Tsuyuri keeps them busy with other minor tasks that she claims will benefit the overall goal to defeat her brother.
Sahnyu members all don different forms of attire, for the purpose of not being easily indentified as a group. All members wear nail polish of varying colors on their finger and toenails, that match the color they represent. They also wear starw hats with bells on them; The hats may be used to move around in the general population unnoticed, or for when the weather requires one. Some members tend to wear their village headband with a scar through the middle to show their defection. However, other members cease wearing them for several reasons. Everyone also wears a necklace with kanji representing a different color depending on who the member is.
|Name of Member||Necklace||Position in Sahnyu||Reason for Joining|
|Tsuyuri Kawahiru||桔梗色 (Kikyō-iro, "dark purple");||Leader||To Kill Seireitou|
|Shōten||憲法染 (Kenpōzome, "black")||Assistant Leader||Unknown|