Dan Katō

Dan had long, pale-blue hair that reached his back and dark green eyes. He wore the standard Konoha shinobi outfit of that time complete with forehead protector and the pocket-less flak jacket. After being reincarnated by Kabuto Yakushi, Dan obtained black sclerae.

After the death of his younger sister, he began advocating for medical ninja to be assigned to every squad. Tsunade shared a similar belief, and the two soon began dating because of it. During their time together, Dan shared his dream of becoming Hokage with Tsunade, wanting the title so that he could better protect the villagers of Konoha. This would prompt Tsunade to give Dan her grandfather's necklace as good luck and encouragement to follow that dream. Soon after that, Dan was fighting in the Second Shinobi World War, in which he killed countless shinobi with his Spirit Transformation Technique. Ultimately, he was fatally wounded during a battle, and while Tsunade was able to stop the bleeding, it was a lost cause as the blood loss was too severe and Dan succumbed to his injuries. Tsunade would later take on Dan's niece, Shizune, as an apprentice and leave the village sometime after that, retiring from life as a shinobi.