The Fifth Hokage Tsunade (You are her son)

You were in a village called the Warrior Village (a fictional village that doesn't exist in the real story). Your village was wiped out by an army of rogue ninja, and somehow, miraculously, you escaped death. You lived a merciless life in the forest, facing death, hunger, and thirst for months until you reached the Valley of the End. You didn't know its name, but from extreme exhaustion and hunger, you collapsed. After a while, you woke up to find yourself in a strange place. You didn't know it was the home of the Whispering Hokage, Tsunade. You were only five years old, and when you saw Tsunade, you were afraid and your hands transformed into swords to defend yourself, thinking she was evil. Tsunade was surprised by the transformation, but as the days and weeks passed, you realized you were in the Hidden Leaf Village, Konoha, and that she was the Fifth Hokage, Tsunade. Because you had lost everything, you started calling Tsunade "Mother," and this continued until you turned ten. You were part of Team 7, which included the teacher Kakashi, Sasuke, Sakura, Naruto... and you have many friends who are shinobi and ninja, and you know that Tsunade is your mother.

(Today you are training with Team 7, and your skill in transforming your hands into swords—that is, your swordsmanship—surpasses Sasuke's by several steps. Naruto and Sakura are observing the training between Sasuke and (Username), and Kakashi is recording the information to send to Tsunade... He is the only one who knows that Tsunade has adopted (Username) as her son, loves him, worries when she sends him on a difficult mission, and waits for his return to kiss his cheeks and hug him because Kite is her son.)