Darkness Technique directly devours all light in a space, creating a dark space, which causes genjutsu that relies on light propagation to fail.
It's practically the perfect counter to the Uchiha Clan. Senju Tobirama, who is inherently evil, did the Uchiha eat your rice? Why are you so targeted?
Putting all that aside, the Darkness Technique is indeed very useful. The inventor, Tobirama, is truly a genius.
As the disciple of the Second Hokage, the Third Hokage naturally learned Darkness Technique and even used it in his final battle. Everyone who used it praised it with zero negative reviews.
The Telescope Technique was adapted from it. The Third Hokage weakened it, sacrificing the amount of light drawn to increase the range of light drawn.
By drawing some light from several kilometers around and projecting it into a carrier, one can control it by inputting Chakra, thereby seeing the view of any illuminated place within the range.
This carrier is a crystal ball. If you raid the Hokage Office, you might see the Third Hokage looking perverted, with a nosebleed.
It can be said that it is indeed the best Sensory Ninjutsu, extremely effective for peeping. The Third Hokage praised its usefulness so much that his physical condition became too weak, even unable to defeat Orochimaru.
And for Jiraiya's health, the Third Hokage tearfully did not teach him this Jutsu.
After understanding the principle, Ling did not practice it because she lacked a smooth, highly transparent crystal ball.
However, if your eyeballs can withstand the immense heat caused by concentrated light, you can also project it directly onto your eyeballs, allowing you to see high-definition images from thousands of meters away, which is even better than the Byakugan.
However, Ling recalled a C-rank Ninjutsu from the Ninjutsu scrolls obtained from the Uchiha Clan: Bubble Technique.
It allows one to exhale bubbles of extremely high strength, which can obscure people's vision and, upon breaking, form a sticky liquid that adheres to enemies, hindering their movement.
The bubbles from this Jutsu can be used as a carrier for the Telescope Technique.
Only spherical transparent objects can form clear images. Although she didn't understand the optical principles involved, it didn't hinder Ling from using it.
This Bubble Technique requires a water nature transformation, turning into a viscous liquid, similar to Mizuame.
Fortunately, Ling's introductory water nature transformation was viscous transformation, which was perfect for casting Bubble Technique.
Originally, Ling intended to use it to cast Mizuame. This Jutsu is quite good for control. If varied, like casting the Great Waterfall Technique, it could definitely trick many people.
Ling formed hand signs, first casting Bubble Technique to condense a human-head-sized floating bubble.
Then, using this bubble as a carrier, she cast Telescope Technique, succeeding on the first try. Ling felt she could use the input Chakra to inspect any place within a few miles where light was reflected.
"I'm truly a genius! Should I see what Shisui is doing?" Ling redirected her Chakra, pinpointing Shisui's residence in the Uchiha Clan.
But before Ling could inspect, she felt her Jutsu was directly broken.
In a secluded courtyard somewhere in the Uchiha Clan, an old man with a grim expression had killing intent in his eyes and a disdainful smile on his lips. "Hmph! The Monkey's Telescope Technique. He's truly persistent. Konoha will return to the Uchiha Clan's hands sooner or later."
"Elder Setsuna, what happened?" A Uchiha guard Body Flickered out from the shadows, asking respectfully.
"Nothing, it's just that the Monkey was peeping at our Uchiha Clan again! I dispersed him!"
Uchiha Setsuna had followed Uchiha Madara, so he already understood the Third Hokage's Telescope Technique and had a method to counter it.
This Jutsu only requires smashing the Chakra that collects light in the sky, but ordinary people cannot do it.
Looking at the broken bubble in front of her, Ling felt a bit deflated. This Jutsu was good, but it was too easy to be discovered. After all, there was diffused Chakra in the sky above, and anyone with strong sensory abilities could detect it.
"That's right! I'm not using it for peeping, but for finding enemies. It doesn't need to be that clear!" Ling instantly realized she had fallen into the mindset of that old geezer, the Third Hokage.
So Ling cast Bubble Technique and Telescope Technique again, this time directly raising the perspective, only showing the general terrain and buildings around her.
Any moving creature was replaced by a small dot, allowing Ling to achieve her goal of reconnaissance.
"After some time, Ling's strength has grown again, and she's even developed a new Jutsu!" A white phosphorescent snake slithered out from a corner, speaking in Orochimaru's voice.
"Senior Orochimaru, the Reincarnation Technique from our last trade really put me through a lot."
Ling was quite annoyed, as the Reincarnation Technique was completely useless; no one could master it after losing the concentration incense.
"Heh heh, Ling, your intelligence is only worth that price. The Reincarnation Technique isn't completely impossible to master, you know."
Flicking his snake-like tongue, Orochimaru's cold gaze lingered on Ling. He could sense a strange, deadly aura emanating from the girl again.
"Is it a trigger-based method?" Orochimaru analyzed the source of this dangerous aura in his mind.
"Senior Orochimaru, aren't you busy with experiments? Why are you looking for me?"
Ling felt that Orochimaru was constantly fixated on her. If this continued, when would the Reanimation Jutsu ever be developed?
"Heh heh, the Ninja World has been restless lately. The Hidden Sand Village is searching everywhere for the vanished Third Kazekage, leaving me no time for experiments."
Orochimaru hated having his experiments interrupted, but this was an irresistible force that he couldn't resolve.
"Is Senior Orochimaru here to extract information?" Ling stared intensely at the stinky snake in front of her, quite displeased.
"Hiss, heh heh, I need information on the Third Kazekage so I can quiet down those annoying Sunagakure Shinobi."
Orochimaru's main purpose wasn't to gather intelligence, but to investigate the situation of the force behind Ling. Such an incredibly vast, widespread, yet extremely secretive organization was simply too dangerous.
"Then what is Senior Orochimaru willing to offer? This time, you can't trick me with useless things like the Reincarnation Technique."
Ling's eyes were cold. Orochimaru's intentions were clear, but she currently only had one trump card to turn the tables, and she couldn't use it lightly.
The white phosphorescent snake flicked its tongue, licking the outline of its mouth. "Sliurp~ Interesting." Then, after thinking for a moment, he said, "How about a substitute for concentration incense to help you practice the Reincarnation Technique?"
Orochimaru was confident, certain that Ling would accept this exchange, and he wasn't lying to Ling either; that thing could indeed be used for practicing the Reincarnation Technique, it's just that~
"Senior Orochimaru has developed a substitute for concentration incense? Why don't you use it yourself?"
Ling expressed deep skepticism about Orochimaru's words. Although Orochimaru was a genius in research, and the Reanimation Jutsu also involved this field, it was still suspicious.