Tsunade shook her head. "How would I know? I've realized I don't know as much about my grandfather as you do."
Hashirama Senju had died when Tsunade was still young, before she was even old enough to understand much.
She knew even less about Hashirama Senju than Yeyu did.
It was awkward, but it was the truth.
Yeyu wasn't interested in the Senju Clan's ninjutsu.
But he was very interested in the Senju Clan's history.
So he'd found many classified records from back then in the Hokage's library.
There were things in those records that even Tsunade didn't know.
Yeyu thought for a moment, then said, "I think the only explanation is that the First was simply too powerful. Madara Uchiha's Mangekyō Sharingan genjutsu was useless against him."
After Yeyu finished speaking, Tsunade rested a hand on his shoulder.
With a mischievous grin, she asked, "Have you already mastered Wood Release?"
"A few days ago, I noticed the plants at home looked a little strange. They didn't look like they'd grown naturally."
"And there was a special kind of life chakra in them."
Tsunade didn't care at all whether Yeyu had secretly learned Hashirama Senju's Wood Release ninjutsu.
If anything, she hoped he had.
Besides, Yeyu had every right to learn any of the ninjutsu stored in Konoha's Hokage library.
Most of the Senju Clan's ninjutsu was in the archives, including most of Hashirama Senju's techniques.
Only a few of the Senju Clan's secret techniques weren't there.
But Tsunade had already told Yeyu that she could show him all of the Senju Clan's secret techniques.
The Third Hokage also turned to look at Yeyu.
In the past, if he'd heard that Yeyu might have mastered Wood Release, he would've been shocked. He might even have suspected that Yeyu had Senju