"This is a x10 Kaio-ken!" The aura that instantly erupted from Rhode's body filled Raditz's eyes with envy. However, a x10 Kaio-ken placed no burden on Rhode at his current strength; he could easily control it. Furthermore, the reason he used the Kaio-ken was not only to demonstrate it to Raditz but also to test the maximum Kaio-ken multiplier his current body could withstand.
Without any hesitation, the next moment, Rhode directly increased the Kaio-ken multiplier to fifty times. The physical burden of a x50 Kaio-ken still had no effect on him, as he had already broken through to Super Saiyan 4, with his base power exceeding a trillion, and had grown even stronger, now easily enduring x10,000 gravity.
After some thought, recalling his previous requirement of roughly a trillion power for a x100 Kaio-ken, Rhode directly increased the Kaio-ken multiplier to a hundred times in one go. At this moment, the physical burden brought by the Kaio-ken finally appeared, but it was only very slight. In this state, Rhode's movements and combat would not be affected, which meant he could fully control a x100 Kaio-ken.
However, when he increased the Kaio-ken to x110, the burden on his body instantly increased exponentially, and even his current body struggled to withstand it. Nevertheless, because his body possessed powerful regenerative capabilities, although the physical burden brought by the Kaio-ken was great, it disappeared in a flash, and the burden it caused was completely outweighed by his body's recovery. His powerful physical regeneration was sufficient to eliminate the physical burden brought by the Kaio-ken.
However, with each increase in the Kaio-ken multiplier, the burden on his body increased exponentially, and even his powerful regenerative ability began to struggle to keep up. Ultimately, Rhode tested that even with his current body's super regenerative ability, he could at most use a x150 Kaio-ken; this was already the limit. Higher multipliers, even with his body's regenerative ability, would cause severe damage that could not be fully recovered in a short time.
And the power amplification of a x150 Kaio-ken did not even reach the amplification of Super Saiyan 3 over his base form. Thus, the Kaio-ken technique had a very low cost-effectiveness and would only have opportunities to be used in certain specific scenarios.
Hmm? While contemplating, Rhode suddenly realized a problem. Although the Kaio-ken's power amplification was not very useful for him now, if used for training to improve physical fitness, it seemed like a viable method. After all, x10,000 gravity no longer had much effect on him, and he needed a harsher environment for training.
After breaking through to Super Saiyan 4 and evolving his life form, the powerful environmental adaptability originally only present in the Super Saiyan 4 state was partially fed back to his base form. This was also why Rhode's base physical fitness rapidly improved as he continuously adapted to high gravity. Currently, he no longer had a high-pressure environment for physical training at hand. So, the remaining option was to venture deep into the cosmos to find planets with extreme environments or high-gravity planets for training and adaptation, to continue improving his physical fitness and push his physical strength to an even higher level. However, this would not only be time-consuming but also very troublesome.
But, if he used a high-multiplier Kaio-ken to temper his base form, theoretically, it should be able to push his physical strength to a higher peak. At the same time, the Ki in the Kaio-ken state is extremely volatile, and he could continue to strengthen his control over Ki during this process.
However, there was a problem here. That was, his base power had long exceeded a trillion, and now it was close to ten trillion. If such power were combined with the amplification of a high-multiplier Kaio-ken, his power would increase to an extremely terrifying level. In such a situation, even a momentary mistake would result in devastating damage to everything around him on a planet like Earth. Thinking of this, Rhode couldn't help but frown.
However, the next moment, his tightly furrowed brows instantly relaxed. Rhode had thought of the power of time and space he controlled. Time Stop could freeze everything around him, and as long as he reacted in time, he could minimize losses as much as possible. Most importantly, the ability to Rewind Time meant that even if damage was caused, he could reshape time and have a chance to start over. However, the current Rewind Time technique could only rewind less than a second of time. He would need to further improve this ability before it would be effective. Thinking of this, the obstacle to training with a high-multiplier Kaio-ken had basically disappeared. He only needed to wait for the Rewind Time duration to be longer, then he could put the idea of training with a high-multiplier Kaio-ken into practice.
"Mr. Rhode, what Kaio-ken multiplier are you using now?!" At this moment, feeling the power that was originally just a wisp of aura, but now had become extremely terrifying under the Kaio-ken's amplification, Raditz asked with cold sweat beading on his forehead.
"It's x150 now." Facing Raditz's words, Rhode did not hide it, speaking faintly. Immediately after, he sensed Raditz's power, which was only a few hundred thousand, and instructed him, "With your current strength, as long as you master the technique, a x10 Kaio-ken should still be possible. As for higher multipliers, you need to be cautious!"
Based on Raditz's current strength, Rhode advised him, while also informing him of the Kaio-ken's drawbacks, "As the Kaio-ken multiplier increases, the burden on the body increases exponentially. After that, each additional multiplier requires a significant increase in one's own power. Therefore, do not force its use, and only use it at critical moments."
"Thank you for your guidance, Mr. Rhode!" Receiving the training method for Great Ape Power normalization and the Kaio-ken technique from Rhode, Raditz was extremely excited. Hearing Rhode's guidance, he repeatedly thanked him.
"Actually, besides these power-amplifying techniques, we Saiyans have an even greater power, and that is transformation!" Seeing Raditz's joyful expression and pleasant mood, Rhode spoke with a deep voice.
"Transformation? Great Ape transformation?" Facing Rhode's words, Raditz was stunned, the first thing he thought of was the Saiyan's full moon transformation.
"No, it's Super Saiyan!" Rhode looked at Raditz seriously, a smile on his face, and corrected him.
Hearing Rhode's words, Raditz was immediately shocked: "The legendary Super Saiyan?!" However, amidst his shock, he was somewhat puzzled: "Mr. Rhode, are you saying that the legendary Super Saiyan is a transformation?"
"Indeed, and it's divided into several levels. However, it requires a certain base power and several conditions to be met for a successful transformation." Looking at the puzzled Raditz, Rhode nodded, "I've already discussed the Super Saiyan matter in detail with Goku and demonstrated it. You can ask him about it and exchange it for the Great Ape Power normalization training method and Kaio-ken technique I taught you."
Rhode did not go into detail explaining the Super Saiyan matter to Raditz, nor did he demonstrate it to him, but instead let him go to Goku for communication and exchange.