Tsunade is the Godaime Hokage, the granddaughter of the First Hokage, the grandniece of the Second Hokage, the elder sister of Navaki, a possible member of the Senju Clan and the bride of Dana. She used to be in a team with Jiraiya and Orochimaru and was a Sannin with them. She is also known throughout the shinobi world for her skill in medicine and Taijutsu. Tsunade is very supportive of Naruto, perhaps due to the fact that he is very similar to Navaki and Dan (everyone has their own dream of "Becoming a Hokage"). They met when Naruto is learning Rasengan. Naruto didn't want Tsunade to become Hokage. They bet that in a week Uzumaki would learn Rasengan. A week later, they met Orochimaru and Kabuto. During the fight, Naruto used his Rasengan on Kabuto. Then he won the argument and saved Tsunade's life. She gave him her necklace and said she believed in him.