Since the Sage of Six Paths pioneered ninjutsu founded on Yin and Yang Release, these two styles of release, distinguished by the proportional composition of chakra used to create them, had been greatly developed by later generations.
Especially compared to Yin Release, Yang Release had flourished far more. After all, spiritual energy was not so easy to manipulate. Even genjutsu-type ninja were one in a thousand. By comparison, the threshold for Yang Release was much lower. Drawing upon physical energy was easier than drawing upon spiritual energy, and the risks were worlds apart—those who overexerted their spiritual energy had a far higher mortality rate than those who depleted their physical energy.
With the barrier to entry lowered, everyone's enthusiasm for research naturally rose. In the modern ninja world, there were countless varieties of Yang Release techniques.
In Konoha, aside from the Senju Clan, the most famous Yang Release art was the Eight Inner Gates. Qi's paternal clan, the Kaguya Clan, also followed the path of Yang Release with their bloodline technique, Shikotsumyaku.
These conditions had given Qi a solid foundation in Yang Release from the very beginning, allowing him to reach his current level.
Orochimaru had not been wrong. This truly was not the Eight Inner Gates. Qi did not know the Eight Inner Gates at all—or rather, he did not like that method of gaining power through overexertion.
If the Kaguya Clan was his foundation, then the partially reserved Inner Body cultivation method taught by the Senju Clan had served as his "charging." After combining it with the Yang Release knowledge he had known in the past, he had created Martial-Type Ninja Arts. Casting ninjutsu without hand seals was merely one of its traits; another mode of this ninja art was a pure taijutsu combat style similar to the