Ryou returned inside the Susanoo. At this moment, Tagorihime was invisible, while Orochimaru was hiding underground; these snakes were more treacherous than the last.
Ryou cursed at Orochimaru, "Orochimaru, is Tagorihime really your ancestor? Is your Sage appetite too heavy? Where did she even start?"
Orochimaru snapped back at Ryou, "Ryou, mind your own business. You killed me in a single glance in front of the Second Hokage earlier, and that made me lose a lot of face."
"You must give me an explanation today!"
Ryou spread his hands, "An explanation? What kind of explanation do you want? Was I wrong to take you out in a second? Should I have fought you to the ends of the universe, until the Great Path was extinguished?"
"Orochimaru, do you even have the capability for that?"
Orochimaru spat, "We are old classmates, after all. Why can't you give an old classmate some face?"
Ryou snorted, "How come you didn't take me along when you guys became famous back then?"
Orochimaru replied, "How could I take you? You could barely release a single Ninjutsu back then, and your Medical Ninjutsu was completely crushed by Tsunade. The team didn't need you."
Ryou shouted, "I don't care! Anyway, you didn't take me when you became famous. I hate seeing you classmates become big shots."
Ryou swung the Gunbai, unleashing a violent storm that destroyed everything around him.
Tobirama hid in the shadows, observing Ryou for weaknesses, only to find that Ryou truly had none at this moment.
His Susanoo was defended by iron sand, and the lower half was reinforced with Wood Release, compensating for the weakness of the first three stages of Susanoo where the lower body could not be defended.
Moreover, he could fly. The height difference between the ceiling and the floor of Ryūchi Cave was significant, giving Ryou an advantage while flying in the air.
To deal with this iron turtle, one had to use a highly powerful Ninjutsu to break through his defense, such as a Biju Bomb.
Or use a Ninjutsu or Genjutsu that ignores defense.
Tobirama thought for a moment and first cast a Genjutsu—the Bringer-of-Darkness Technique.
This was a Genjutsu developed by Tobirama specifically to target the Uchiha Sharingan. It was a technique that caused visual hallucinations and stripped away all light.
Ryou lost his vision instantly, and he shouted, "Who? Who turned off the lights?"
Orochimaru and Tagorihime, hidden underground, both noticed that Ryou had lost his vision.
The Bringer-of-Darkness Technique completely deprived one of vision, creating absolute darkness.
This type of Genjutsu not only deprived one of light on a mental level but also stripped away light on a physical level.
External light would also be sucked away, turning everything into darkness.
In the original work, during the Konoha Crush Plan, when Orochimaru fought the Third Hokage, several Anbu commenting outside the barrier could see the battle inside.
Even with the Wood Release seal, they could still see the Third Hokage using the Shadow Clone Technique.
But after Tobirama cast the Bringer-of-Darkness Technique, the Anbu could no longer see what was happening inside.
After the Third Hokage sealed Tobirama, the Bringer-of-Darkness Technique vanished, and Orochimaru himself said the darkness had disappeared.
This proved that the Bringer-of-Darkness Technique deprived one of sight on both mental and physical levels; only the caster could see what was happening inside.
In reality, where Orochimaru and Tagorihime saw Ryou, it was also dark.
Not only was Ryou's vision blocked, but Candy, as well as Shukaku and the Seven-Tails, were also affected by Tobirama's Genjutsu and plunged into absolute darkness.
The Bringer-of-Darkness Technique was already a high-level Genjutsu, and through Tobirama's hand, this technique was like ultimate darkness.
It plunged Ryou into absolute darkness, unable to see the flow of chakra, and completely losing his sense of space.
The Sharingan became completely ineffective.
At this moment, Tobirama threw a Flying Thunder God Kunai and body flickered in front of Ryou.
"Water Release: Hard Whirlpool Water Blade!"
Tobirama condensed a high-speed rotating water vortex in his hand, compressing it into a high-density water javelin, and upon approaching Ryou's Susanoo, struck it with the attack.
The moment the water javelin was thrown at Ryou's Susanoo, it exploded into a gigantic water tornado. This water tornado combined four types of damage: piercing, cutting, strangling, and impact.
The iron sand defense on the outside of Ryou was quickly blasted away by the water tornado, and the water tornado immediately attacked the Susanoo inside.
Under this powerful impact, the Susanoo began to shatter slightly.
The Hard Whirlpool Water Blade was a Ninjutsu original to the game, officially classified as an S-rank ultimate Forbidden Jutsu, and was one of the top offensive Water Release Ninjutsu.
Just as the Hard Whirlpool Water Blade was about to pierce Ryou's Susanoo, Ryou suddenly broke through the absolute darkness.
He raised the Gunbai; this time, he didn't fan it.
He swung the Gunbai down, absorbing the Hard Whirlpool Water Blade that was attacking the chest area of the Susanoo.
After the Gunbai absorbed the Hard Whirlpool Water Blade, Ryou aimed the fan toward Tobirama's position, "Old Senju Demon, here is your Ninjutsu back!"
"Uchiha Reflection!"
Ryou had been hit by Tobirama's Bringer-of-Darkness Technique and was plunged into absolute darkness; the Sharingan was useless.
However, his Sensory Ninjutsu was still active. Relying on the Sensory Ninjutsu from the White Zetsu cells, Ryou sensed Tobirama's position.
The Gunbai released a powerful Wind Release, and the Wind Release carried the Hard Whirlpool Water Blade, reflecting it back toward Tobirama's position.
Tobirama snorted, "Hmph, troublesome fan!"
The water tornado struck, and Tobirama activated the Flying Thunder God Technique, retreating back into the darkness. Because of his departure, the darkness on a physical level vanished.
Orochimaru and Tagorihime could see Ryou's Susanoo again.
But the darkness in their minds still persisted.
Ryou immediately used the Genjutsu energy of the Sharingan to drive away the Bringer-of-Darkness Technique from his brain.
Before long, he regained his sight.
He immediately dispelled the Bringer-of-Darkness Technique for Candy, Shukaku, and the others.
Ryou's brain had a layer of Genjutsu defense, but this defense had absolutely no reaction to the Bringer-of-Darkness Technique.
That layer of Genjutsu defense was useless; at most, it would make enemies take a few more detours when probing your brain after you died.
The Six Paths of Pain all had Genjutsu defenses in their brains, but they would still fall for Genjutsu if they were supposed to.
Genjutsu attacks the enemy's sensory system. As long as you have perception of the outside world—still seeing, hearing, or touching—you cannot defend against Genjutsu.
Because the brain is not a closed system; the visual nerves, auditory nerves, tactile nerves... all have feedback with the outside world.
No one can truly defend against Genjutsu.
The best method remains having a partner dispel the Genjutsu.
But this time, Tobirama even attacked the accessory on Ryou's shoulder.
Ryou cursed at Tobirama, "Old Senju Demon, you are truly ruthless! Attacking even a cute little kitten—you have no humanity!"
Tobirama did not respond to Ryou's words.
During the Warring States Period, Tobirama had fought quite a few Shinobi Cats from the Uchiha Clan. When these Shinobi Cats started hissing, even Hashirama would have to steer clear.
Orochimaru realized at this moment that to break through Ryou's iron turtle, a powerful offensive Ninjutsu was needed.
But Ryou's Gunbai was truly troublesome. It had even reflected a Ninjutsu as powerful as the Second Hokage's, proving that Ninjutsu was already useless against Ryou.
Orochimaru asked Tagorihime, "Lady Tagorihime, can you use your Senjutsu to attack his fan?"
Senjutsu was not in the category of Ninjutsu; if Ninjutsu didn't work, then only Senjutsu could be used.
Tagorihime said, "No, although the Gunbai cannot absorb my Senjutsu, it can release Wind Release on the level of a Biju Bomb."
"Didn't you see it earlier? My Senjutsu attack was directly destroyed by his fan!"
Orochimaru was somewhat distressed. Had Ryou grown to the point where he couldn't even peel back his shell?
What kind of potent drug did this evil Uchiha eat to become this strong?
Immediately, Orochimaru thought of Kato Dan's Spirit Transformation Technique. Currently, the only Ninjutsu that could attack Ryou was a spirit-body attack that ignored defense.
Orochimaru bit his finger, preparing to activate the Summoning Jutsu to summon Dan from Hiruko's side.
It was estimated that the Shinobi Allied Forces had not yet invaded the Hidden Rain Village to fight a decisive battle against Madara.
Blocking Ryou's ascension here was more important, so he would consider Ryūchi Cave first. Moreover, Orochimaru also wanted to know the situation of the Shinobi Allied Forces through Dan.
"Summoning Jutsu!"