Yuuda

The Eight Virtues seal on Kougyoku's hair pin allows her to propogate an immense amounts of water, using Wave Release to create much more powerful ninjutsu which is related to Water Release, without needing a source of nearby water, and without draining her own chakra reserves. The water created using wave release seems to be a bit sentient, taking on slightly different movements and actions dependent upon the shape which it takes at the time of its creation. One of Kougyoku's favorite forms is that of a giant water serpent (which she named her weapon after).

The hair pin itself has an ability when using Namiton, to transform into a large blue sword, which has a handle that is a double sided water serpent and has a long blue blade which tapers off to one end. This weapon form is one which Kougyoku uses when she is especially damaging and gives her a larger medium through which to control the abilities sealed within the hair pin.