What were ninjutsu, exactly? In Kenichi Amamiya's view, so-called ninjutsu were merely a very unique application of energy. These energies gathered together, operated according to a specific method, and produced miraculous effects. More often than not, though, it felt like the power of "I figure." At the very least, that was how Kenichi Amamiya saw it. Thus, he now had some other ideas about ninjutsu. The ninjutsu recognized and used by ninja were often the particularly unusual kind, capable of producing more unique effects and achieving greater efficiency in energy utilization and conversion. That was one way to create ninjutsu. For those reasons, Kenichi Amamiya had begun to have some other ideas about ninjutsu. In his view, creating a ninjutsu was not impossible, but it was rather troublesome—troublesome enough to give anyone a headache just hearing about it. That was why Kenichi Amamiya rarely created ninjutsu. They needed constant improvement, and he also felt that his own energy needed some adjustments. For that reason, he had not created any ninjutsu. But now, in order to fulfill his promise to Mei Terumi, Kenichi Amamiya planned to improve the ninjutsu he had studied before and see whether he could make it achieve the effect he wanted. As for whether it would work, Kenichi Amamiya did not know yet. Still, no matter what, he intended to give it a try. If it worked, that would naturally be for the best. If not, there was no better solution.
As Kenichi Amamiya began to mobilize the Chakra within his body and circulate it according to the established process, a massive amount of Chakra was instantly drained from him. At the same time, he saw a door in the void—the door belonging to the Pure Land. It was huge and sturdy, difficult to open. Moreover, if