Controlling the Seven-Tails with conventional Genjutsu is difficult.
In the original work, Obito indeed controlled the Nine-Tails using only one Mangekyo.
But at that time, the Nine-Tails was in a state of absolute sealing, with its limbs and tails all firmly pinned down.
Forget controlling the Nine-Tails; even if he were to snatch it, the beast had no way to resist.
It was easy for Obito to use the Mangekyo to manipulate the Nine-Tails.
Moreover, Obito had Hashirama cells in his body, so his dōjutsu power was being replenished at every moment.
Shisui's attempt to control the Seven-Tails with conventional Genjutsu simply wouldn't work; he could only use the strongest Genjutsu, Kotoamatsukami.
Using the Kotoamatsukami of his right eye to control the Seven-Tails meant that using it again would require a cooldown of over ten years; Shisui would be left with only the Kotoamatsukami in his left eye.
This Kotoamatsukami, Shisui intended to save for Madara.
Furthermore, Shisui felt it was worth it; the Genjutsu he set for the Seven-Tails was to make it his Summoned Beast, so from now on, he would have a Tailed Beast as his summon.
Even if his eyes went blind, he would still possess the power to protect himself.
The effect of Kotoamatsukami, the strongest Genjutsu, was also domineering; the Seven-Tails had come out acting all high and mighty, even blocking Nagato's Adamantine Sealing Chains.
But it failed to guard against the incredibly insidious Kotoamatsukami.
Similarly, performing Kotoamatsukami had strong side effects on Shisui, essentially draining all of his chakra.
Jiraiya looked at Shisui's miserable state with some embarrassment: "Sorry, I don't know Medical Ninjutsu!"
Jiraiya wanted to treat Shisui, but he didn't know Medical Ninjutsu; it would be great if Tsunade were here.
At the thought of Tsunade, Jiraiya's eyes dimmed, and he sighed in his heart.
Shisui waved his hand and said, "Lord Jiraiya, it's fine. I'll be okay after a little rest."
Kakuzu's masks all flew back, stitching themselves into his back.
He looked with great wariness at the Seven-Tails behind Shisui, which was serving its master like a Summoned Beast.
Kakuzu was also a veteran Shinobi who had emerged from the Warring States Period; it was impossible for him not to know the great fame of the Mangekyo Sharingan.
He hadn't expected such powerful eyes to be obtained by such a young member of the Uchiha Clan?
Even at his advanced age, Kakuzu felt a hint of jealousy!
The Uchiha truly are a clan blessed by heaven.
To be stronger than Kakuzu at such a young age.
Yes, Kakuzu believed Shisui was already stronger than him.
If the two were to fight, Kakuzu could guard against Shisui's Genjutsu.
His body had been modified by the Earth Grudge Fear Technique, giving him very high resistance to Genjutsu.
But Shisui's Genjutsu could control a Tailed Beast; with Shisui's Mangekyo plus the controlled Tailed Beast, it was impossible for Kakuzu to defeat him.
Greed then arose in Kakuzu's heart; if he snatched Shisui's heart, would he be able to obtain his powerful dōjutsu?
Seeing Shisui's appearance, it seemed the Genjutsu used to control the Seven-Tails just now had powerful side effects—a great opportunity!
But Kakuzu saw Jiraiya beside Shisui, and the greed in his heart slowly receded.
He couldn't beat Jiraiya.
Furthermore, Earth Grudge Fear cannot steal someone else's Kekkei Genkai.
The essence of Earth Grudge Fear is to steal the enemy's heart, inheriting their chakra pathway system and attributes.
That is, the opponent's chakra and nature transformations.
The techniques used are still one's own.
Moreover, even if he snatched Shisui's Sharingan, what then?
Where could Kakuzu flee?
Whether it was Madara or the soon-to-be-united Shinobi Allied Forces, they could easily deal with him.
Most importantly, Kakuzu was a Shinobi of the older generation and a man of his word; since he had signed a contract with Konoha and was employed by them,
he had to abide by the terms of the contract.
In the original work, Kakuzu loved money, but he never stole it; he always honestly and dutifully accepted bounties.
Kakuzu belonged to the Lawful Evil alignment; he followed rules, but the rules he followed were for the sake of doing evil.
Now that he was receiving a salary from Konoha, he was a mercenary Shinobi for Konoha, and he would not break his own rules.
Konan flew to Nagato's side, looking at the Seven-Tails hovering behind Shisui in the distance; the reflection of the Mangekyo was in its eyes, making it look like a Summoned Beast driven by the Uchiha.
Konan was somewhat wary: "He's from the Uchiha Clan, and an awakener of the Mangekyo Sharingan."
Nagato's expression was a bit ugly: "This is troublesome; he has already used the Sharingan to control the Seven-Tails."
Jiraiya, Kakuzu, Shisui, plus the Seven-Tails controlled by Shisui.
None of them were easy to deal with.
On Nagato's side, once the twelve elders of Kusagakure saw the battle was too intense, they started slacking off in the back; only Shirakawa, Mui, and Chizu were of some use.
Nagato's Adamantine Sealing Chains were indeed a trump card, but they couldn't stand up to too many powerful Shinobi on the opposite side.
Nagato shouted: "Konan, call for backup!"
"Yes!"
Are you the only ones who can call for backup? We can too.
Konan bit her finger, released chakra onto it, and then slammed it onto the ground.
"Summoning Jutsu!"
Seeing Konan preparing to call for backup, Jiraiya, Shisui, and Kakuzu all became alert.
Because the people behind Nagato and Konan were all beyond the norm.
If Konan called Madara over, then even the three of them—Kage-level powerhouses—plus the Seven-Tails wouldn't be enough for Madara to fight.
That was Madara's absolute suppressive power.
Even if it wasn't Madara, Ryou would be very difficult to deal with.
Ryou's Wood Golem was pure stats; after being easily defeated by Ryou, Jiraiya had studied it for a few days and felt that if one wanted to go head-to-head with such a Ninjutsu, it could only be a Biju Bomb released by a Tailed Beast.
Or one could use softness to overcome hardness, not meeting it head-on but using lightning-fast speed to dodge the Wood Golem's attacks.
Jiraiya wasn't the speed type either.
The only one who could deal with Ryou's Wood Golem was Minato's Flying Thunder God kiting.
But now Minato was training at Mount Myōboku and couldn't rush over.
Whether it was Madara or Ryou, they weren't people Jiraiya's group could handle.
With a 'poof,' smoke exploded in front of Konan; the smoke wasn't high, and Jiraiya's group had a bad premonition.
If the one summoned was a person, that would be terrible!
Fortunately, it wasn't.
Appearing before Konan was a greyish-white short-haired cat, dressed as a Shinobi Cat, carrying a large scroll on its back and holding a lollipop in its mouth.
This was Ryou's Summoned Cat—Candy!
"Hahaha..."
Jiraiya laughed loudly and stepped forward, his tall back shielding Shisui and the Konoha Anbu: "Konan, stop making your teacher laugh!"
What else can a cat do besides hiss?
"Candy?! Why are you here?"
Shisui recognized the Shinobi Cat Konan had summoned; Candy was not only Ryou's Summoned Cat but also a Shinobi Cat under Cat Granny who made weapons and scrolls for the Uchiha Clan.
Many Shinobi of the Uchiha Clan had seen Candy.
Candy ignored Shisui and only looked at Konan.
Candy and the rest of the High-Cloud Quintet only signed summoning contracts with Ryou alone.
Why could Konan summon Candy?
It was the spore!
Konan had Ryou's spore in her body, making her equivalent to a clone of Ryou.
Konan used the chakra in Ryou's spore to activate the Summoning Jutsu, which was equivalent to Ryou's clone activating the Summoning Jutsu.
Konan paid no mind to Jiraiya's laughter and said to Candy, "Candy, White Zetsu has already told Ryou about the situation here, right?"
"Mm! On Ryou's side, Shukaku has already been successfully captured; he's now diving into the desert, being taken to Amegakure by a clone."
While answering Konan, Candy took out a scroll and pressed its cat paw onto it.
"Reverse Summoning Jutsu!"
Jiraiya suddenly stopped laughing!
Brother, don't do this!