Inoue Yagyū

is a genin of Yamagakure and a member of Team Kirigakure. She is the pseudo-jinchūriki of Saiken.

Background
As a descendant of the Yagyū clan, upon her birth, Inoue was hand picked to be the replacement jinchūriki in the event that D was unable to seal Saiken within the intended jinchūriki. During the sealing process, it became immediately clear that the beast had too much chakra for the seal to handle, so, after sealing the beast in its entirety within the jinchūriki, the excess chakra was then drained and sealed into Inoue, with another unique seal, making her into a pseudo-jinchūriki.

As the village's first pseudo-jinchūriki, and, having learned the mistakes of the, Inoue was, along with Sarutobi, the actual jinchūriki, immediately secluded for jinchūriki training, causing them to be behind most of their classmates in the Academy. Upon graduating, she was placed in Team Kirigakure, to be supervised by renowned village jōnin, Yukimaru Kirigakure.