Ten days had passed, and Ryoha had transformed from someone whose physical capabilities weren't even that of a normal adult man to someone with physical capabilities exceeding that of an average person on Earth. He could be said to be not far behind well-trained soldiers on Earth. Coupled with Ryoha's rich combat experience, his strength was further enhanced.
Meanwhile, Bulma had made decent progress in her preliminary research on the Saiyan lineage. So both of them packed up their house. At this point, Ryoha had at least the ability to protect himself, which was quite decent from the beginning of Dragon Ball. He would absolutely not lose to the current battle power of ten possessed by Goku. Furthermore, the terrifying Saiyan body's defense, toughness, and other aspects were all enhanced as his battle power increased.
"Let's set out to collect the Dragon Balls." That was precisely what Ryoha intended—to collect the Dragon Balls. He thought it better to use the Dragon Balls for his own purposes than to waste wishes on frivolous things, remembering the incident with Oolong wishing for underwear, which irritated Ryoha.
"Ryoha, what do you plan to wish for?" Although Bulma had reverted to her appearance at eighteen when she returned to this world, her mentality was that of a mature woman in her thirties, emitting a contradictory aura of maturity and youthfulness.
"The Kaio-ken." Ryoha pondered for a moment. The most overpowered moves were the Kaio-ken and the Spirit Bomb. At least before becoming a Super Saiyan, this technique was the most useful—it was an absolute weapon for fighting opponents above one's level.
"Indeed, that technique is very useful." Ryoha had already told Bulma everything he remembered about the plot and events in the Dragon Ball world, so she knew what the Kaio-ken was.
"I didn't expect that I made the Dragon Radar for adventurous purposes back then, and now it comes in handy." Bulma took out the Dragon Radar she had made many years ago, feeling somewhat nostalgic.
"I remember back then you were thinking of wishing for a perfect prince charming." Ryoha teased.
"Are you trying to make fun of me? It's a pity that I know if someone's perfect, they're not worth loving. Besides, haven't I found someone I love now? Unfortunately, he's far from perfect and quite a playboy!" Bulma snorted coquettishly, clearly displeased with Ryoha's teasing. At that time, she was just a girl capable of dreaming about everything she desired. As she matured, such thoughts disappeared.
"Haha!" Ryoha chuckled. Unexpectedly, he was countered by Bulma. Seeing Ryoha embarrassed by her words, Bulma smiled triumphantly, like a mischievous cat stealing a bite.
Encountering fierce beasts along the way, Ryoha took care of them one by one. He had stopped using ninjutsu and genjutsu in battles. Therefore, Ryoha needed to get accustomed to the new fighting style. Normally, Bulma would have made transportation tools, but at this point, Bulma also possessed Saiyan blood, so it was good for her to get some exercise too.
She didn't want to become a liability to Ryoha when facing countless dangers in the future. Therefore, despite her lack of interest in this aspect, having such a good boost from the Saiyan blood, she decided to train. Besides, the Saiyan bloodline inherently carried a martial spirit. Even Bulma, to some extent, was influenced by it, and her resistance to practicing these matters was not as strong as before.
Of course, the most crucial change was Bulma's mindset. She didn't want to burden Ryoha. Otherwise, even if the Saiyan's martial spirit was intense, it wouldn't affect Bulma. The significant transformation in her attitude combined with the Saiyan bloodline led to this change.
"Hey? Who are you guys?" Since Bulma didn't ride a motorcycle and didn't crash into Goku, she wasn't mistaken for a monster. Also, Goku was a very obedient and innocent child.
"People like you!" Ryoha replied. Indeed, he and Bulma were now pure-blooded Saiyans, just like Goku.
"One of us?" Goku looked at Ryoha and Bulma with confusion. One was much taller than himself, and the other was completely different.
"Don't believe it?" Ryoha smiled faintly as a tail appeared behind him. After choosing the Saiyan bloodline, the Conquest Space offered two options: keeping the tail or removing it. Ryoha felt that keeping the tail would make breakthroughs easier. Moreover, transforming into a Great Ape increased battle power tenfold, a significant trump card. And Goku had successfully transformed into a Super Saiyan Four because he had a tail.
Theoretically, keeping the tail was much better for Saiyans. However, Bulma chose not to keep hers. For her, it would affect her appearance, and she had no use for a tail. If Bulma had the power of a Super Saiyan Three, that would have been sufficient. Super Four was unnecessary.
"A tail, you both have tails!" Goku exclaimed happily, feeling as if he'd struck gold. Although his grandfather looked like him, his grandfather didn't have a tail, making Goku wonder if they were truly similar. Seeing someone with a tail like himself made him instantly joyful.
"I invite you both to my place for fish. I've caught a big one!" Goku, delighted, immediately revealed his innocent side.
"How should I address you?" Ryoha asked.
"I'm Son Goku. That's what my grandpa named me," Goku said honestly.
"I'm Ryoha, and she's Bulma. Nice to meet you. But I suppose you're aware of the tail's weakness, right? It's something that needs to be overcome." Ryoha had been working hard to overcome the tail's weakness these days. But truly conquering this weakness was not easy. No wonder Goku mentioned that it took a lot of effort to overcome it.
At first, whenever Bulma grabbed his tail, Ryoha felt weak all over. However, after days of training, Ryoha had finally reached a point where it didn't affect him much unless someone used excessive force. At this rate of progress, he should completely overcome it in a few more days. However, the process was excruciatingly painful, feeling completely powerless, almost like being paralyzed.
"Oh! What you say seems right." Goku had never paid attention to this aspect. He was still a blank slate. Grandpa Gohan's training was laying the foundation for him, intending to teach him more as he grew older. Who knew a sudden outbreak of circumstances led to Grandpa Gohan's death, possibly preventing Goku, under Grandpa Gohan's guidance, from breaking through a power level of one hundred.
Goku only started making rapid progress after learning about Ki. Master Roshi was indeed an excellent teacher, but compared to Grandpa Gohan, who raised Goku, Grandpa Gohan was more suitable to guide him. Master Roshi preferred his students to find their own paths rather than teaching them specifically about Ki control and perception. Although that approach was beneficial in the long run for normal Earthlings, it was entirely unnecessary for Saiyans.