When developing medical ninjutsu years ago, Tsunade had studied the corpses of many shinobi, including quite a few with Kekkei Genkai. But for various reasons, she had never conducted an in-depth study of the Kaguya Clan and knew little about the Kaguya Clan's "Shikotsumyaku."
As a result, she had always scoffed at the various exaggerated rumors surrounding Kirigakure's Kaguya Clan.
She did not believe the Kaguya Clan's constitution was truly comparable to that of her own Senju Clan or the Uzumaki Clan of the Land of Whirlpools, as the rumors claimed.
But after examining Kimimaro's body, she suddenly realized that her previous assessment of Kirigakure's Kaguya Clan might have been too subjective.
Given Kimimaro's condition, she believed it should have been impossible for him to still be alive. In particular, the strange substance in his bone marrow and blood that could break down her Yang Release chakra was easily the most terrifying substance she had ever encountered.
"To have this substance invade his bone marrow and blood, yet still be able to fight so vigorously... What kind of constitution is this?!"
Faced with the facts, even the proud Tsunade had to admit that the Kaguya Clan's constitution was extraordinary. It was very possible that, like the Senju Clan and the Uzumaki Clan, they too traced their origins back to the Sage of Six Paths.
Seeing that even Tsunade was helpless against Kimimaro's illness, Jiraiya sighed. "Who would have thought a tiny village like Otogakure could have so many surprising things?"
Tsunade shot Jiraiya a glance. "What else is surprising?"
Jiraiya's expression immediately turned grave. "That boy from Otogakure named Haku has mastered Senjutsu!"
"What?!"
Tsunade was startled.
She was no stranger to Senjutsu, so she knew very well how difficult it was to cultivate. Throughout Konoha's history, only the First