The days that followed became peaceful and boring once more. Aoba Yamashiro led several new Genin on all kinds of "miscellaneous" missions, letting these rookies learn how to properly do a ninja's work in the shortest possible time.
After that, Aoba Yamashiro spoke less and less. At most, he would answer when one of the children came to him with a question.
From the detailed yet straightforward answers Aoba Yamashiro gave, along with his explanations of the points most easily misunderstood, it was clear that he possessed extensive and meticulous knowledge of ninjutsu.
Moreover, the missions he chose looked scattered and random, yet they effectively trained every aspect of these Genin's abilities. As long as they steadily carried out these missions, they could unconsciously polish all the fundamental skills required of a ninja.
Missions like searching for lost pets, harvesting crops, running errands to nearby villages and towns to deliver letters or buy things, driving away beasts destroying farmland, and clearing trash from rivers—so long as they kept doing these inconspicuous little missions and put some of the ninjutsu techniques they had learned to use.
Then techniques like Tree Climbing and Water Walking would naturally become second nature without requiring dedicated practice.
As for more advanced ninjutsu? Although Keiki and Yui both wanted to learn high-level techniques, Aoba Yamashiro had never taken the initiative to teach them any ninjutsu.
After this peaceful life had continued for some time, Aoba Yamashiro kept Yinsen behind after the group of rookie Genin completed their work for the day.
He secretly gave Yinsen a hand signal without the other two noticing. Thus, once the mission was over and the team disbanded, Keiki and Yui said goodbye to their teammate as usual before heading home separately.
Yinsen simply stood there in silence. Only after his