During this period since applying the improved Vitality Seal, Dan felt a massive difference in his body as things changed increasingly. Every cell in his body is nourished and improved in a never-ending cycle; healing chakra flows in every organ, every muscle, and every part of his being. It was a truly amazing sensation to feel your power advancing every day; his entire body is constantly renewed, becoming stronger and better with every passing hour.
Dan noticed during chakra refining that the amount he could forge in each session became much larger than before. Not only that, but it increases gradually as days pass, making him clearly understand that the Vitality Seal improves not only his body and longevity but also his basic talents and qualifications continuously over time. Dan considered this a very important discovery; it means that even without additional training, he will continue to improve thanks to the seal. This was a massive gain he did not expect so clearly or plan for.
Even his physical training in the depths of the water hole reached a depth of four hundred meters below the surface, where the pressure was incredibly massive. It began giving noticeably accelerated results, as every exercise builds his strength faster than before because it is synchronized with the Vitality Seal technique. Every movement under that massive pressure polishes his muscles and bones with double efficiency.
What matters most to Dan is his constantly increasing vitality and life energy, because he knows this reflects directly on his expected lifespan. His age, which was one hundred and eighty years with the original seal, began to stretch and rise gradually. Dan estimated, based on his precise calculations, that it would reach at least three hundred years over time, and perhaps more if the improvement continued at this rate. This increased his happiness and satisfaction greatly; it means much more time for training, growth, and development. It also means he has enough time to improve the Vitality Seal again in the future, which will further increase his longevity—thus in a continuous cycle toward his ultimate goal: the true longevity he has sought since his feet first stepped into this dangerous world.
Today, Dan decided to move a bit away from his area to test his full power without restrictions. He felt the massive energy flowing in his body and wanted to see what he could truly do with his new strength. So, he headed to a distant area in the forest, a remote region where he would cause no damage to his base or his family.
First, he decided to try his pure physical strength without using any chakra—only the muscles and bones strengthened by the Vitality Seal. He stood before an area full of massive trees and large rocks, took a deep breath, and then released a simple punch without any reinforcement.
BOOM! The sound was thundering like lightning, and the punch caused the destruction of an entire area of the forest before him. An area one hundred meters long literally evaporated; all rocks and trees turned into dust and very small fragments. All that remained was a huge trench about one hundred meters long and ten meters wide, carved deeply into the ground.
Dan looked at the effect of his simple strike, very impressed by his pure physical strength. This was a level he hadn't imagined even a few years ago, and clear evidence of the success of the improved Vitality Seal in strengthening his muscles massively.
Then he decided to try something stronger; he decided to enhance his punch with chakra and see his true striking power when using his full capabilities. So, he stood before a massive rocky mountain, a mountain rising hundreds of meters into the sky. He took a fighting stance, concentrated his chakra in his fist, wrapped his hand with it, and then released a direct punch toward the base of the mountain.
BOOOOOOOOM! The sound this time was a superhuman explosion that shook the entire region. A massive wave of explosion and earthquake spread everywhere; the ground shook violently, and the air itself exploded due to the atmospheric shockwave, as if he had used a tactical nuclear attack. Even in his distant area kilometers away, the earth shook strongly. The infants all began crying from fear because of the sudden vibration, and his women carried them quickly and fearfully to soothe them, looking anxiously in Dan's direction, but they trusted he was fine and just training.
Dan stood in his place, looking ahead with eyes slightly wide with admiration and satisfaction. Before him was a completely empty area where the massive mountain had been moments ago. The mountain that rose hundreds of meters had literally evaporated, turning into very fine dust spreading in the air. All that remained of it were some small scattered rocks on the far sides and a huge trench in the ground where its base used to be.
Dan looked at the result, very happy with the level of power he can exercise now. This was all the result of years of isolation, perseverance, and harsh training without stopping—years of hard work, patience, and precise planning. He felt deep pride in what he achieved.
Then he decided to test his speed and his attack with his daggers made of pure chakra. He formed two sharp daggers in his hands and began moving at his superhuman speed. He moved at a speed the naked eye could not track; all that could be seen were sharp cutting marks appearing in the area on rocks and trees that suddenly began falling after being cut with amazing precision as if they were soft butter. Sometimes he releases concentrated attacks—perfectly clean cutting lines that divide solid rocks into thousands of small pieces. At the same time, he moves in total silence thanks to the silent movement technique he developed, making him a terrifying enemy who cannot be seen or heard.
Finally, he decided to conclude his experiments using his threads, his favorite technique he developed himself over the years. So, he stood in an open place, concentrated his chakra, and then released it.
Hundreds of thousands of invisible and very fine threads shot out from him in all directions around him—threads thin as hair but sharper than any sword and strong as steel, moving with lightning speed that cannot be seen. They attacked everything within a full kilometer radius around him.
What happened next was catastrophic; everything in that direction began to crumble and be cut. Massive trees were cut into thousands of small pieces, solid rocks crumbled into dust, and the ground itself was cut and cracked. The state of total destruction spread to a full kilometer in all directions, as if a hurricane of invisible blades passed through the area and destroyed everything down to the level of dust particles.
Then Dan quickly recovered his threads, pulling them all back into his body. He stood looking at the ruin he caused—at the vast area that was full of life moments ago and had now become a completely ruined, barren, and destroyed land.
Dan smiled a satisfied smile, then wondered deep inside with deep curiosity about how his power level would compare to legendary people like Madara Uchiha or Hashirama Senju—the two monsters who will appear in the distant future and change the world with their battles. Based on what he saw today, he believes that if he wasn't at their full power level yet, he was at least very close to them. All this was a result of his correct decisions of complete isolation and continuous training without stopping for many long years, which greatly increased his certainty and the firmness of his decision to continue this approach no matter how long it takes; the results speak for themselves.
After taking one last long look at the total destruction he caused, which was clear evidence of his terrifying power, Dan disappeared from his place in an instant with superhuman speed, returning to his base where his family awaited him. He felt complete satisfaction with his current strength, but he also knows he won't stop here; rather, he will continue training and evolving toward higher and higher levels.