When Gamamaru saw Sasuke, he was taken aback and all his sleepiness immediately disappeared. He seems to have seen something in Sasuke, and exclaimed in surprise, “Indra.”
Gamamaru has lived for over a millennium, therefore, the moment he saw Uchiha Sasuke, he immediately recognized that Sasuke is the current reincarnation of Ōtsutsuki Indra.
At the same time, Gamamaru also saw vague fragments of the future in which Sasuke would play an important role.
Many people are aware of the fact that Gamamaru can foresee the future, time and time again, he has demonstrated this ability. Using his ability to foresee the future, Gamamaru must have known that only the Ōtsutsuki brothers Hagoromo and Hamura–who inherited their Chakra from Kaguya–could resist her, so he cleverly approached the two brothers and confused them to rebel.
At the moment when Hagoromo was going to fight Kaguya, he handed over a special seal tag to Hagoromo. Again, Gamamaru must have known that Hamura would die at the hands of Hagoromo so he gave a seal tag that can resurrect the dead.
Gamamaru cleverly did not point out this to Hagoromo, probably because he foresaw the future, and understood that it was necessary for Hagoromo to kill his brother in order to awaken the Rinnegan.
Later, Gamamaru foresaw the result of the test that Hagoromo gave to his children Indra and Asura while deciding his heir.
And finally, Gamamaru also led Jiraiya on the path of searching for the ‘Son of Prophecy’.
However, the problem is, for quite a few years now, Gamamaru has stopped seeing anything related to the future, that is, up until now.
Therefore, when Jiraiya saw the change in Gamamaru, he immediately got up and asked, “Lord Gamamaru... what happened? Did you see something?”
Being aware of the concept of ‘cause and effect’ Gamamaru chose not to reveal anything and changed the topic with a small laugh, “Oh no... nothing... I was just surprised at the excellence of these children.” Then he turned towards Fukasaku, and instructed him, “Take a test of these children.”
“What?” All four children were horrified upon learning the truth.
At this time, Jiraiya said with a smile, “Mastering Senjutsu is not as easy as you all are assuming it to be, don’t think that just because Naruto mastered it, you lot will master it as well, Naruto is an exceptional case!”
Elder Fukasaku said, “The reason these people became statues is that they were too greedy and rash for power. You people don’t have to worry too much, even if all of you fail to master Senjutsu, I can at least ensure that none of you will become a toad statue.”
Sasuke breathed a sigh of relief when he heard Elder Fukasaku’s words. And quickly asked, “Fukasaku-sama, will we become toad when we use Senjutsu?”
Kiyomi, Neji, and Hinata looked at Fukasaku, none of them wanted to become a toad.
Elder Fukasaku naturally understood the children’s dilemma, and said with a smile, “Don’t worry... when training the Senjutsu Mode of Mount Myōboku, although the user gains toad features, however, they don’t become toads. In the future, when your mastery increases, the toad features will become less and less visible and totally disappear.”
This also means that the more secondary features appear in a person’s body, the less his mastery in Senjutsu and vice versa.
Senju Hashirama had the least amount of features on his body when he used the Senjutsu Mode, except for a few lines under his eyes, there were no changes. Naruto’s mastery was even better compared to the Shodaime Hokage. When he entered the Senjutsu Mode, except for the change in his pupil, there was no other change.
In comparison to Naruto and Hashirama, Jiraiya and Shisui’s mastery of Senjutsu is obviously inferior.
Well putting that aside, Fukasaku’s words relieved the four children and they were ready to try.
With that, Elder Fukasaku took some toad oil from the fountain and rubbed a few drops on the arms of the four children, while instructing, “This is special toad oil, it will help you sense the natural energy spread in the heaven and earth, start concentrating, and try to sense the Natural Energy.”
The four children nodded, and under the guidance of Elder Fukasaku, they tried to sense the Natural Energy dispersed in heaven and earth.