Otherwise, if Li Yi went alone, there was no guarantee she would teach him. Who did he think he was? Did he expect everyone to teach him just because he wanted to learn? Besides, she was the wife of the First Hokage. Her status was far beyond anything Li Yi could match.
The Third Hokage knew that, too, so he had come in person to persuade her.
Now that the Third Hokage saw Mito Uzumaki had agreed, he smiled and took his leave. Li Yi stayed behind.
Mito Uzumaki looked at Li Yi and paused before asking, "Li Yi, could I ask you for a favor?"
Hearing her words, Li Yi hurriedly replied, "Please, Lady Mito. If it's something I can do, I won't refuse."
Seeing how earnestly Li Yi spoke, Mito Uzumaki said, "I hope you'll look after little Tsunade in the future. It's the last thing I can do for her as her grandmother."
When he heard what she was asking, Li Yi nodded. "Don't worry, Lady Mito. I'll protect Tsunade!"
Mito Uzumaki nodded with satisfaction. In her eyes, Li Yi was strong enough. With his promise, Tsunade should be safe in the years to come.
After that, Mito Uzumaki began teaching Li Yi the Yin Seal, an S-rank supplementary sealing technique that also involved quite a few other Sealing Jutsu.
As for Sealing Jutsu, Li Yi hadn't spent all his time training Senjutsu in Shikkotsu Forest over the past two years. He had also studied sealing from time to time and picked up a little knowledge. But compared with those who had received formal training in Sealing Jutsu, he was still only a novice.
So Li Yi gained a great deal from Mito Uzumaki's instruction.
Seeing how quickly Li Yi grasped Sealing Jutsu pleased Mito Uzumaki even