"Oh? What technique?" Tsunade turned to look at him.
Unable to go out gambling lately, Tsunade had been bored out of her mind, so she had patiently begun training Kushina Uzumaki and Hyuga Rinka.
Uchiha Yi, meanwhile, had been set aside for the time being. Tsunade felt she had little left to teach him apart from Medical Ninjutsu.
As for the Yin Seal, Tsunade was not even sure Uchiha Yi could learn it. She had tailored it to herself, and while other women could train in it, it would be difficult for a man like him.
"Guess!" Uchiha Yi gave Tsunade a mysterious look, then pulled two kunai from his backpack. He held one in each hand, and under the gazes of Tsunade, Kushina Uzumaki, and Hyuga Rinka, the words "World Peace" appeared on the blades.
"Is that... a Flying Thunder God Mark? You mastered the Flying Thunder God Technique?" Tsunade stared at Uchiha Yi in disbelief.
Tsunade knew a fair bit about the technique. Like Hiruzen Sarutobi and the others, she had studied it before.
Unfortunately, her sense for space was only a little better than most people's—nowhere near what she needed to train in the Flying Thunder God Technique.
Tsunade had held out some hope for Uchiha Yi, but she had not thought his chances were high. Even if he did master it, she had expected it to take a long time before he could use it.
Yet Uchiha Yi had actually succeeded?
"I haven't completely mastered it. I've solved some of the crucial problems, but I'll probably need more time before I can use it in combat.
"I'll especially need to get used to it in fights. As you know, battles between experts can turn on the smallest margin. One slip, and instead of killing the enemy,