Three trials, two of which involve Illusion Technique; the Uchiha Race is indeed the most suited to face them.
If the opponent doesn't intend to attack, Uchiha Yoichi wouldn't make trouble for himself, although Ichikishimahime was quite upset about it. But upon hearing it was the White Snake Sage's command, she reluctantly accepted.
However, she kept glaring at Uchiha Yoichi with her eyes, and even when he left to meet the White Snake Sage, she did not stop.
The White Snake Sage usually presents herself as a kind elderly woman, and she holds a smoking pipe in her hand.
Upon seeing Uchiha Yoichi, her first words were: "You can absorb Natural Energy? You have the same constitution as the race outside Ryuchi Cave, and have a great chance of mastering Sage Mode."
"I came here looking for Shinga, White Snake Sage."
Changing his tone, Uchiha Yoichi continued, "But what do you mean by constitution? Will I end up losing my mind like those outside who absorb too much Natural Energy?"
"Six hundred years ago, one of their ancestors stumbled into Ryuchi Cave. After three trials, he gained the opportunity to master Immortal Technique; he was naturally suited for it, absorbing and controlling Natural Energy easily. The ones outside are his descendants.
However, they haven't perfectly inherited his constitution. Though they can absorb Natural Energy, they cannot perfectly control it. Nonetheless, thanks to their constitution, Natural Energy won't cost them their lives..."
The White Snake Sage explained to Uchiha Yoichi with an elderly voice, which sounded odd to him.
"The better the constitution, the greater the chance of successfully mastering Immortal Technique?"
"Naturally, if you're like the one from six hundred years ago, you'd master Immortal Technique in a single day."
Uchiha Yoichi nodded slightly and then said to the White Snake Sage: "I understand. Now, I need to find Shinga, could you tell me where it is?"
The White Snake Sage paused, then asked suspiciously: "Uchiha, you're not planning to train in Immortal Technique?"
"I'm tempted, but I'll wait a few days when I'm better prepared."
Since the more perfect the constitution, the higher the success rate, why rush? He has three chances left of Stealing; perhaps one of these can snatch a constitution, making training in Immortal Technique easier.
"Shinga is located in the southernmost cave, but outsiders rarely find it in Ryuchi Cave. Let Tagitsuhime take you."
As soon as the White Snake Sage finished speaking, Ichikishimahime jumped up and said quickly: "I'll take him instead."
"Whatever."
After the White Snake Sage spoke, Ichikishimahime slowly floated in front of Uchiha Yoichi, looked at him, and said: "Follow me."
Uchiha Yoichi wasn't worried about Ichikishimahime causing trouble, so he followed her out.
While walking in Ryuchi Cave, Ichikishimahime suddenly said: "Shinga is the most ill-tempered Great Snake in Ryuchi Cave. If you're thinking of making it a Summoned Beast, I advise against it."
"No problem, my temper isn't good either; we'll see after a fight."
Uchiha Yoichi replied, having been betrayed and almost killed by the Third Generation Kazekage, a bit of fierceness is warranted. But whatever happens inside Ryuchi Cave, you still must rely on strength to make them submit.
After seven twists and turns in the cave.
Clang!
Uchiha Yoichi directly drew Lightning Fang, its blade faintly surrounded by lightning.
"No need for little tricks like circling to test patience; I really don't have much patience."
"Hmph, really.... follow me."
Seeing this, Ichikishimahime snorted coldly, but after such a long detour, she vented some anger and stopped leading Uchiha Yoichi blindly around Ryuchi Cave.
After walking for a while, they arrived at a larger cave entrance. Ichikishimahime crossed her arms and said: "This is where Shinga lives; just one last warning, if you want to talk to it nicely, find its Reverse Scale."
After speaking, Ichikishimahime floated away, and soon disappeared.
Once inside, there was a massive crater, looking up you could see the sky.
In this crater lay a very conspicuous red serpent; this must be Shinga.
"I don't have much friendly sentiment to persuade Shinga, the only way is to defeat it and take the Reverse Scale, then tame it."
Gathering Chakra, Uchiha Yoichi quickly bit his finger and used Summoning Jutsu.
Boom!
A tremendous noise accompanied by thick smoke startled the sleeping Shinga awake.
"Who dares disturb Lord Shinga's slumber!"
Shinga coiled its snake body, and as the smoke cleared, saw a bear with a human appearing in its cavern; seeing this scene, it shouted angrily:
"Humans, how dare you bring a stinky bear into Lord Shinga's territory, courting death!"
"Roar~!"
Gates also roared, but questioned Uchiha Yoichi behind him why he summoned it suddenly.
Uchiha Yoichi said: "Subdue it first, Gates. Once I've made it a Summoned Beast, you can go back."
"Roar~!"
With a loud roar, Gates quickly grew to nearly twenty meters tall, the golden fur on its belly more prominent, a bear's roar almost collapsed the rocky walls of the cave.
Gravity Jutsu!
A brown light expanded from Gates, immediately enveloping Shinga in range.
Under ten times gravity, Shinga slammed to the ground.
"Damn you, cursed bear; I'm going to eat you!"
Shinga gathered strength, struggled to rise, its great mouth retracting as it tried to spit venom; its venom would petrify anything it touches.
With his Sharingan, Uchiha Yoichi saw Chakra concentrating in Shinga's mouth, told Gates: "Use a stone pillar, lift its mouth."
"Roar!"
A bear roar as Gates's massive paws hit the ground.
In an instant, a seven to eight-meter stone pillar grew beneath Shinga's head, lifting its enormous snake head to the air.
Spurt, spurt!
The stone pillar prevented Shinga from hitting its target, venom spraying into the air.
"Roar!"
Gates charged forward, paws beating Shinga's head continually.
Their sizes similar, Shinga might be larger coiled, but gravity kept it down, unable to rise, worsened by Gates's pounding.
"Hold it down, Gates!"
Crackle!
Uchiha Yoichi leapt from Gates's head to Shinga, Lightning Release Chakra surging through him at maximum speed.
In the next second, a powerful lightning discharge erupted from Uchiha Yoichi's hand, crackling over Shinga's body.
"Argh! Damn!!"
Shinga struggled to get up, but Gates suddenly jumped, landing heavily on Shinga, its body jerking under the impact.
Uchiha Yoichi seized the opportunity, arriving at the bottom of Shinga's head, found its Reverse Scale, and tore it off.
After tearing away the Reverse Scale, Shinga reacted as if its weakness got struck, the massive snake body going limp.