The simplicity of the question was another test, to see if the girl would be able to understand this kind of situation better, and therefore, allow Henrex to switch his manner of teaching in order to give Erika a more enthralling course of education in the way of the ninja. Thus, Henrex would be paying very close to Erika's reaction to this form of teaching.
Hearing her answer and sensing her disinterest, Henrex sighed and put a hand to his head. The main point of this would be that she would understand the core concepts of ninjutsu and be able to adapt that to her everyday life. Through that, he had hoped that Erika would be able to use this and put this in practice so that she would be able to create her own way of ninjutsu, one that adapted to her way of life and would be able to merge with how she fought.
But, this would not be the case.
Ergo, Henrex would then spend the next coming hours going over the various skills that a ninja learned through the art of ninjutsu. This would cause him to bring out the various weapons from his form of the Container. This would lead to naginatajutsu, shurikenjutsu, and even sui-ren, water training. All of these would be covered with -- for the most part -- usage of the weapons in question.
This would be a long process, but Henrex was sure that it would give Erika the kind of training that she wished -- as it was quick for him to discover through this that she was a woman of action, and Erika would most likely be drawn to the training furthermore, as the constant action from the usage of the weapons would be something that heavily weighed with her wish within these lessons.
Eventually, this would lead to the training within hand to hand combat. Admittedly, this was one of Henrex's least favorite portions to teach -- as he was a swordsman, and taijutsu was one of the least trained aspects of him. Even with Hakuda, the Shinigami's style of hand to hand combat, he still could hear the calling of the sword within his spiritual life, which was something that drew him to Zanjutsu, the Shinigami's way of the sword.
Thus, this would be something that Henrex believed would be a half-hearted lesson, as Henrex was not
very enthralled to teach this. It was part of ninjutsu and he appreciated it, but he still preferred his sword than his hands. So, it would be rather quick lessons -- not just because of the disinterest of the teacher -- but also because of the simplicity of the techniques in general. He was sure that Erika would easily be able to memorize them and practice them, in order to become skilled enough with them to be able to defend herself accordingly.
Thus, the final lessons would come down to one of the most important, yet also the most difficult lessons in all of the way of the ninja: kuji-in. The nine symbolic symbols and the nine hand seals, as well as being where the ninja drew their main strength from. This would be a rather arduous lesson that consisted of pretty painful hand positions and Sanskrit teachings, in order for Erika to be able to speak the mantras of the hand seals in their mother tongue.
Thus, the training would go on from there, as the two would continue to go over the hand positions and mantras. It would be one of the final official teachings that Erika would receive from him before she would become a full, true ninja.
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