Shinsei wasn't lying; the Palm Thunder does indeed come in several levels.
These thumb-sized black spheres weigh hundreds of tons and are filled entirely with compressed water.
Their original size was no more than that of a house.
Water in nature is inherently difficult to compress; no hard object can store compressed water, and no machine can compress it.
However, this world possesses wondrous Ninjutsu, and even more powerful Sealing Jutsu.
Shinsei drew inspiration from the Reverse Four Symbols Sealing Technique, using the immense pressure of this Sealing Jutsu to compress a large amount of naturally occurring water into a small sphere in an instant.
When needed, the seal is instantly broken, allowing the previously compressed water to burst forth naturally, thus creating a powerful impact.
Theoretically speaking, the larger the volume of water, the greater the explosive force after compression.
Therefore, these Water Mine are also divided into those with a capacity of hundreds of tons, thousands of tons, and tens of thousands of tons.
The one used just now was only a common hundred-ton class weapon. It seems that this level of palm-sized Palm Thunder poses no threat to Susanoo.
But there's no rush. He has two other levels of Palm Thunder that he hopes will give Madara Uchiha a refreshing experience.
Shinsei once again took out a palm-sized Palm Thunder from the storage scroll:
" Madara-senpai, please be careful. Since this Ninjutsu was developed, I have never dared to use it on land, so it is difficult to estimate its exact power. I hope Madara-senpai will not disappoint this junior."
Madara Uchiha at the small black ball, about the size of a walnut, in Shinsei's hand, his expression becoming more serious than ever before.
Based on common understanding, this small ball is ten times the size of the previous black ball, so its power is also ten times that of the previous Ninjutsu.
Shinsei held the palm-sized Palm Thunder in his hand. Even after reducing its weight using the Light-Weight Rock Technique, this palm-sized Palm Thunder, weighing thousands of tons, could not reach the previous speed by simply flicking it with his fingers.
To truly regard this weight of Palm Thunder as nothing, an upgraded version of the Light-Weight Rock Technique is needed— the Ultra-Light-Weight Rock Technique.
However, even if you put a knife to Ōnoki's neck, he would never hand over those core Ninjutsu of Iwagakure.
Shinsei gripped the thousand-ton palm-sized Palm Thunder in his hand and hurled it at Madara Uchiha at top speed. Enhanced by Sage Mode and Chakra Enhanced Strength Technique, his power was immense.
The black sphere sliced through the air with a piercing crack, arriving in front of Madara Uchiha's Susanoo in the blink of an eye. Madara Uchiha hurriedly crossed his twin swords to block the black sphere's path.
As Shinsei Hand Seals, the seal on the Palm Thunder instantly broke, and a massive white mist erupted.
Shinsei's blue Sharingan saw a massive white mist rushing towards him, so he quickly formed a hand Hand Seals and vanished into thin air.
When he reappeared, he was beside Hinata, a thousand meters away from Madara Uchiha's Susanoo.
In the blink of an eye, a massive shockwave had already arrived.
Without using any Hand Seals, Shinsei unleashed a massive wall of water that spun and rose from the ground, blocking the path between him and Hinata.
The surrounding giant trees were blown to pieces by the violent shockwave, and the leaves on some trees were riddled with holes by the water mist that had traveled thousands of meters.
This has gone beyond the scope of ordinary bombs; it's practically a miniature atomic bomb.
However, since the core material of the Palm Thunder is water, it is greatly affected by air resistance once it explodes.
A large amount of water will rapidly disintegrate into water mist after the explosion, and its power will rapidly decrease once it exceeds a certain distance.
At this distance of over a thousand meters, the power is actually minimal; the impact is mainly due to the shockwave generated by the explosion, which is no longer harmful to ninjas.
However, within the blast radius of Palm Thunder weighing thousands of tons, it possesses immense power within a 300-meter radius, with the power increasing the closer one gets to the core.
The Susanoo just now took a severe hit within a 50-meter radius.
At this moment, the Susanoo, which was hundreds of meters tall, was knocked to the ground by the shockwave. It knelt on one knee, with a Chakra sword planted on the ground, and was slowly getting up.
Shinsei's Mangekyō Sharingan had excellent vision; even from a distance of over a thousand meters, he could clearly see the fine cracks that had just appeared on Susanoo's body, though Madara Uchiha quickly repaired them.
Madara Uchiha still somewhat dazed; the enormous explosion had made his ears ache. If it weren't for the protection of Susanoo, he would have been blown to bits by now.
Even though he briefly regained his peak condition by using the power of the Demonic Statue of the Outer Path, his body was ultimately not as strong as it had been in his youth.
As the previous host of the Rinnegan, Madara Uchiha had a thorough understanding of all Ninjutsu.
Although the black sphere he just saw didn't look like a Ninjutsu, his extensive experience with Ninjutsu allowed him to see through its Ninjutsu.
It's actually about compressing water and then releasing it? Who would have thought that seemingly ordinary water could generate such powerful energy when compressed? It's such a simple yet ingenious idea!
However, to think you can defeat me Madara Uchiha, like this is underestimating me!
" Shinsei, I admit I underestimated you. I didn't kill you the moment you arrived in this world. Black Zetsu reported your danger to me, and although I took it seriously, I didn't go all out."
The current situation is ultimately due to my lack of attention to you. I hope that in the other world, I won't make a similar mistake.
Madara Uchiha dissipated his massive Susanoo. He had already realized that Shinsei's Palm Thunder didn't require much Chakra to unleash, and it was clearly something he had prepared in advance.
Rather than being blasted apart by such a powerful Palm Thunder while protected by Susanoo, it's better to come out and continue the fight openly and honestly.
When did I, Madara Uchiha, have to hide from a mere brat?
He felt the life force within his body slowly dissipating; time was running out.
Then let's teach this kid a lesson and show him whether I, the Asura of the Ninja World who survived the Warring States period, can live up to my name!
Shinsei saw that Madara Uchiha had withdrawn his Susanoo and was rushing towards him.
As expected of Madara Uchiha, he found a way to counter his Palm Thunder in the blink of an eye.
If he wants to stay hidden inside Susanoo, all I need to do is keep launching palm-sized Palm Thunder.
Sooner or later, we'll blow him to bits.