Shiyu felt that since he had already come to Mount Myōboku, listening to a prophecy and learning a set of Senjutsu wouldn't waste too much of his time.
Afterwards, led by Fukasaku, Shiyu arrived at a place where small hills gathered.
"Lord Fukasaku, is this where we learn Senjutsu?" Shiyu asked.
"Yes, see those low hilltops? You can train there," Fukasaku replied, then Fukasaku up a nearby stone slab and threw it up there.
To Shiyu's surprise, the stone slab was placed steadily on the hilltop.
"This is truly amazing!" Shiyu exclaimed in amazement.
"Next, you need to sit down and meditate there, calm your mind, and maintain your balance. That's the first step," Fukasaku said.
"Huh?" Shiyu had used chakra to climb trees and walk in water before, but he had never used chakra to gather in his buttocks to maintain his balance.
"Why not give it a try?" After acquiring the Rinnegan, Shiyu had mastered the ability to fly. Shiyu flew up and sat on the stone slab, but Shiyu quickly realized he had lost his balance. Shiyu fell, he immediately used his flying ability to levitate in the air.
Sage Fukasaku was taken aback, then immediately said, "How can you fly? No, you can't fly, otherwise it's cheating, and you won't be able to control your chakra."
Shiyu gave an awkward laugh and said, "Okay, okay."
Shiyu then noticed a group of stone Toad nearby and asked, "Are these Toad..."
The Sage Fukasaku said, "That's right. These are all humans who practiced the Senjutsu of Mount Myōboku. Without exception, they all absorbed too much Natural Energy and eventually turned into stone."
"You must not absorb too much Natural Energy," Fukasaku cautioned.
"The first step is to maintain balance; the second step is to use Toad Oil to help you feel the Natural Energy around you; and the third step is naturally to absorb this Natural Energy into your body."
Sage Fukasaku explained it to Shigure in general terms Shiyu had a good grasp of the situation.
"In that case, let's begin." Shiyu wasn't afraid of hardship; he only hoped that the Senjutsu of Mount Myōboku would give him a pleasant surprise.
"Okay! Keep it up. I'll catch you when you fall. I hope you won't use your flying ability again," Fukasaku instructed.
"Okay!" Shiyu then became serious. Shiyu's control over chakra was already second to none, and this time he was just using a different approach, using the chakra he controlled to maintain his body's balance.
At first Shiyu kept falling, but Shiyu quickly learned from experience and found a way to manage it.
"I used too much chakra this time. I should use a little less!" Shiyu sat on the stone slab again. This Shiyu sat cross-legged on the stone slab for a full minute before finally losing her balance and falling off.
"Shiyu progress is so fast! Faster than Minato and Jiraiya! In my lifetime, no one has had more talent than him!" Sage Fukasaku exclaimed.
"Success!" Shiyu then sat steadily on the stone slab and did not fall off for five minutes.
"My God! It's only been a short time! His first stage is already over!?" Fukasaku was also somewhat incredulous.
"Lord Fukasaku? How did it go? Did I pass?" Shiyu asked.
"I see! Shiyu! It seems you really are suited to learning the Senjutsu of Mount Myōboku!" Shiyu looked at Shigure Fukasaku surprise and then said, "Just as I said, the second stage is to apply Toad Oil to the body, allowing every cell in your body to feel the surrounding Natural Energy."
Shiyu then asked, "But I can already sense the Natural Energy around me!"
Fukasaku asked, "How is that possible? A novice who hasn't applied Toad Oil can't sense the Natural Energy around them!"
Shiyu replied, "First of all, I am a sensory ninja. Secondly, I studied Senjutsu in Ryūchi Cave and Shikkotsu Forest, so I am very sensitive to Natural Energy."
"The Natural Energy over there is noticeably different from here, but the Natural Energy here is also easy to sense," Shiyu said.
"I see! I had forgotten that!" Fukasaku then said.
"Alright then, since you've trained in Sage Mode, you can now absorb the Natural Energy of Mount Myōboku. But you must control it carefully; don't absorb too much, or you'll turn into a frog," Fukasaku said.
"Also, you still need to maintain your balance on that stone slab while absorbing Natural Energy. This time I will go up with you. If you show any signs of frogification, I will immediately stop you from absorbing Natural Energy."
"Understood!" Shiyu then placed Fukasaku on his shoulder, quickly jumped up, and sat on the stone slab to begin absorbing Senjutsu Chakra.
Because of her previous experience, Shiyu absorbed Natural Energy very smoothly. However, precisely because it was too smooth, Shiyu absorbed a large amount of Natural Energy, and sure enough, her body gradually began to transform into a frog.
Upon Fukasaku this, Fukasaku immediately used his cane to forcefully stop Shiyu from absorbing Natural Energy.
"I'm so sorry, Lord Fukasaku, I was so stupid," Shiyu apologized.
"If you're stupid, are there any smart people in the world? It seems you really are a genius! You absorbed so much Natural Energy on your first try! If you hadn't been so greedy, you wouldn't have turned into a frog! Let's do it again!" Fukasaku then had Shiyu continue absorbing Natural Energy.
This time Shiyu absorbed the experience from before and began to absorb Natural Energy in a very small amount. After a while, however, Shiyu found that her body had not absorbed enough Natural Energy at all.
Fukasaku reminded him, "You've been too cautious this time. Be bolder and find the critical point where your body can absorb Natural Energy; that will be your most powerful state."
Shiyu nodded and said, "Understood!" So Shiyu accelerated the absorption of Natural Energy once again, but this time, because Shiyu was impatient again, he turned into a frog again and was once again woken up by Fukasaku's cane.
"I never imagined that the Sage Mode of Mount Myōboku would be so difficult!" Shiyu exclaimed in surprise.
"Don't underestimate yourself. You've already mastered most of the art of absorbing Natural Energy. Now, all you need to do is maintain your body's balance, maintain your Senjutsu Chakra, and maintain the balance within your body."
"Alright! I'll try again!" Shiyu was not discouraged and climbed onto the stone slab once more. This time, Shiyu was bold and careful, controlling the continuous flow of Natural Energy while constantly observing her own changes.
"Great! I've already absorbed a lot of Senjutsu Chakra!" Shiyu was also overjoyed.