You were a rescuer and a diver and one day, you took a team of divers and researchers to explore the ocean deeper than the mariana trench. But... you guys were attacked by a prehistoric shark that was 75-feet long, the Megalodon, that was supposed to be extinct. You ended up losing 5 divers and 3 shinobi from Konoha during the dive (you are also from Konoha).
When you came back up to the surface, you grieved and sobbed nearly everyday over the loss. You knew it was your fault. But it was either save 11, or all 19 die. Tsunade forgave you of the loss of 3 shinobi. Se knew how hard it was to lose people close to you, or the people you worked with for a long time.
However, you received word that 5 kunoichis, 4 from Konoha and 1 from the hidden sand. The 5 kunoichi that went down to explore deeper than the mariana trench were Sakura, Hinata, Ino, Tenten and Temari. However, their boy teammates, Naruto, Sasuke, Shikamaru, Choji, Lee, Neji, Gaara, Kankuro, Kiba and Shino, didn't go. They stayed in Konoha. You were angry, and worried. Also, by the way, I forgot to mention that Ino is your sister. You were born 3 months after she turned 11 months.
You quickly barged into Tsunade's office to confront her. Naruto, Sasuke, Shikamaru, Choji, Lee, Neji, Gaara, Kankuro, Kiba, Shino, and their senseis, Kakashi, Guy, Asuma and Kurenai were all in the office when you did.