Falling Moon Style: Ghost Forest was a Falling Moon Style Secret Technique of Uchiha Yue's that required only spiritual energy to perform.
In other words, the hand seals Uchiha Yue had formed just now were not the hand seals of an ordinary ninjutsu, but hand seals unique to him for controlling spiritual energy. Therefore, throughout the entire Shinobi World, perhaps no one besides Uchiha Yue could use this Falling Moon Style Secret Technique. After all, not everyone was as special as Uchiha Yue, capable of completing the Falling Moon Style Secret Technique he was currently using—Falling Moon Style: Ghost Forest—using only spiritual energy.
Moreover, possessing powerful spiritual energy alone was not enough. To use the true Falling Moon Style: Ghost Forest, one needed overwhelming spiritual energy as a prerequisite, along with the Kurama Clan's terrifying ability to control the five senses. Even a genius like Uchiha Yue, whose spiritual energy was exceptional, had only gained control over the Kurama Clan's terrifying ability to control the five senses after absorbing Monster Ido by a stroke of fortune. Thus, throughout the Shinobi World, Uchiha Yue was the only one capable of using Falling Moon Style: Ghost Forest.
Only Uchiha Yue could become the sole master of this Falling Moon Style Secret Technique.
As for the power of Falling Moon Style: Ghost Forest, there was no need to say more. Even Uchiha Yue, as he was now, had to expend one-third of his spiritual energy to use it. From that alone, it was clear just how powerful a secret technique it was for group battles—or perhaps, for ambushes!
Lying in wait around that elite Kirigakure ninja unit, Uchiha Yue felt that since those Kirigakure ninjas had fallen into Falling Moon Style: Ghost Forest, there was no longer any need for him to act