Unlike in the Five Great Nations, the library in the Hidden Rain Village offered chakra techniques of every nature, ranging from D-rank to A-rank.
Even hand seal-less ninjutsu could be learned with a little effort, simply by finding a teacher employed there.
This exceeded every expectation of the Kaguya clan. When they first learned of it, they were so stunned that they could not react for quite some time.
Later, they even found records of the Uchiha Clan's secret techniques and the mysteries of their ocular jutsu in the library.
The author of the book recording information about the Uchiha was none other than Fugaku Uchiha.
The Kaguya Clan Head could only marvel at how generous everyone in the village was, giving of themselves almost entirely without selfish motives.
Then he found Sakumo's swordsmanship in the library as well.
It was the secret behind the White Flash's fame throughout the Ninja World, yet here, it was freely accessible.
After carefully studying it, learning it, and integrating it with the Kaguya clan's fighting methods, the Kaguya Clan Head grew considerably stronger.
Beyond his amazement, this also strengthened his resolve. He returned to his clan and spent three months compiling a secret manual of Kaguya hand-to-hand combat.
It could be said that, as time accumulated, the ninjutsu and books in the Hidden Rain Village's library and Ninja Academy were increasing at a rate visible to the naked eye.
Aside from the contributions of the two kekkei genkai clans, Xia Le occasionally created new ninjutsu, and Orochimaru did the same.
After conducting numerous kekkei experiments, he had created many powerful techniques.
Apart from certain forbidden techniques, he compiled them all into books and sent them to the Ninja Academy's library.
Their purpose in doing so was undoubtedly to make the village stronger.
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