The confidence in Ron's voice made Ay and Killer Bee exchange glances. Dodai adjusted his documents, ready to record any data, curiosity flashing in his eyes. Even Raiya and Hana seemed momentarily caught off guard, as they knew how strong the third Raikage was.
The Third Raikage chuckled. "Is that so?" Without hesitation, he strode forward. "Then let's see if your so-called gravity seal can make me break a sweat."
Ron exhaled, eyes gleaming. "Alright then." He led everyone to the designated area, where a solid metal platform, roughly the size of a classroom, lay embedded in the ground. The surrounding floor was raised slightly, covered in intricate runes, with a small pedestal nearby etched with seals for controlling the mechanism.
The Third Raikage wasted no time, leaping onto the platform.
Ron continued, "Father, to activate the gravity seal, you'll need to infuse it with a bit of your chakra. At its current efficiency, an hour of use only consumes about the same chakra as a single C-rank jutsu. Unlike traditional ninjutsu, these seals don't create gravity, they manipulate and amplify it, making them far more energy-efficient than Iwagakure's Light-Weight Rock Technique."
He gestured toward the interface. "From here, you can adjust the gravity level. Right now, it ranges from twice to 50 times the normal gravity."
The Third Raikage eyed the intricate runes on the floor, their faint movement resembling an interface. A flicker of curiosity crossed his normally stoic expression. He placed a hand on the pedestal, channeling a steady flow of chakra into the system. In response, the runes flared to life, casting shimmering patterns across the chamber.
"Let's see if this is as impressive as you claim," he muttered, stepping back as the seal activated.
For a moment, nothing happened. Then the platform beneath his feet trembled. The air grew dense, pressing inward, as a deep hum resonated through the chamber.
Ron observed calmly, his gaze steady. "Father, this is just basic two-times gravity. It should feel new but not challenging for a ninja. Most can withstand up to five times gravity, and Jonin can usually handle ten. You can raise it directly to ten if you'd like."
Without hesitation, the Third Raikage stepped to the side pedestal and increased the setting to ten times gravity. Ed, standing nearby, moved closer. The pedestal had been designed to allow control from both inside and outside the field.
"Raikage-sama, let me handle it," Ed offered. "I'll adjust it gradually as per your instructions."
Ron continued his voice even. "At this level, your weight is ten times heavier. For taijutsu specialists, this might still be manageable without chakra, but most ninjas would need chakra reinforcement. While this isn't much for you, every increment beyond this is a significant leap far beyond what most ninja bodies can endure. Of course, not all bodies are equal."
The Raikage gave a firm nod. "Increase it until I say stop."
The gravity intensified. He stood firm, muscles tensed, bracing himself. Even without chakra, he held his ground, though the strain was evident, this was more weight than he had ever experienced.
At twenty times gravity, the force reached a level most ninjas couldn't withstand, especially without chakra reinforcement. Strength alone wasn't enough. Lifting twice the weight compared to another person was not the same as enduring twice the gravity, it was an entirely different challenge.
Even a single-level increase in gravity was like the gap between ranks in battle. It was similar to how a higher-leveled fighter in a game could dominate multiple lower-leveled opponents, just as two level 5 characters couldn't necessarily defeat a level 10 character unless the only factors were health and attack. But in reality, and even in games, other parameters like endurance, regeneration, and resistance played a crucial role. Likewise, each increase in gravity wasn't a simple linear progression, it was an exponential leap in difficulty.
The Third Raikage activated the initial stage of his Lightning Chakra Mode, feeling some relief as his body adjusted to the immense pressure. He could withstand it, but even simple movements were a struggle. Yet, he knew he could push further.
"Keep going," he commanded.
The gravity increased again. In response, he fully entered his Lightning Chakra Mode, his aura intensifying with each passing moment. As the weight grew heavier, his chakra radiated more fiercely. Finally, at 33 times gravity, he signaled to stop.
At that moment, the Third Raikage stood trembling, his muscles straining against the crushing force. High-density lightning chakra crackled violently around him, like a rampaging Jinchūriki barely holding itself together. Sweat poured down his body, his breathing ragged. even standing had become a challenge.
For those outside the Gravity Seal's field, it felt like witnessing another world. The air inside was so dense it seemed almost detached from reality, pressing inward like an invisible wall. But as fresh air periodically forced its way in, bursts of immense airflow surged out, creating powerful gusts around the platform.
33 times gravity was his limit. At this stage, even the smallest movement felt like pushing through solid rock, as if mountains were dragging against every action. Inside the field, his chakra reserves drained rapidly, along with his physical stamina. Within ten minutes of enduring this level, a pool of sweat had already formed beneath him, a silent testament to the immense strain on his body.
Inside the village, if someone suddenly radiated chakra on the level of a Tailed Beast, it would undoubtedly cause panic. However, Ron's secret base was protected by layers of advanced sealing techniques, ensuring that no information leaked out and nothing could be sensed from the outside world. More than just increasing gravity, Ron had designed the seal to function like a complex program rather than a simple one-dimensional effect. It accounted for factors such as airflow and clothing, ensuring that only the person inside was affected while preventing excessive air compression. These refinements made the system not only functional but also practical for training.
At this moment, Ron asked, "Father, how do you feel? How long can you last under this gravity?"
The Third Raikage exhaled deeply, then pushed his Lightning Chakra Mode to its absolute limit before responding with a grin. "At this intensity, I can probably last around 30 to 40 minutes, at most an hour. But let's not wait, raise it to 50 times gravity. I want to experience it, even if it means getting hurt. After all, we're here to test the medical device."