Four Ninja Prohibitions

"Could Jiraiya-sensei's so-called serious business be gathering material for your novels? Isn't that still peeping?" Kushina complained. "Why do you spend all day doing such boring things? Is that kind of thing really so interesting?"

Interesting! Jiraiya thought silently, but he didn't say it aloud.

Interesting! Duke, who was listening with rapt attention, silently agreed, but he didn't say it aloud.

Interesting! Minato kept a straight face and answered affirmatively in his heart, but he didn't say it aloud.

Interesting! Teuchi's squinting eyes below narrowed even further, but he didn't say it aloud.

Interesting! The ramen patrons perked up their ears and nodded, but they didn't say it aloud.

At that moment, every man in the ramen shop had formed a united front. But none of them dared say it aloud. Kushina's red hair swayed like octopus tentacles despite the lack of wind, so for the sake of their safety, they wisely chose silence and merely offered Jiraiya their spiritual support.

"Jiraiya-sensei is already getting on in years, yet instead of thinking about starting a family and building a career, you spend all day doing boring things..." Kushina went on and on, launching into lecture mode.

Being scolded by a junior without being able to talk back left Jiraiya utterly humiliated. He shot Minato a pleading look, and Minato gave an awkward smile before pulling Kushina down to sit.

"Sensei must have something urgent to discuss with me. I'll be right back." After saying that, Minato hurriedly dragged Jiraiya away.

Kushina angrily ate her ramen and said to Duke, "People say ninja have Three Prohibitions, but I think Jiraiya-sensei should be added to make it Four Ninja Prohibitions. The fourth is to stay away from Jiraiya. Don't you agree?"

Duke hurriedly nodded. Greatly encouraged, Kushina decided that when she had children in the future, she absolutely would not allow them to spend time with Jiraiya.

Outside the shop, Minato and Jiraiya walked into an alley. Jiraiya let out a sigh, still shaken. "Kushina has become more and more capable of lecturing people. Minato, you must have it rough every day!"

Minato chuckled but did not answer. As someone in the terminal stages of being henpecked, he was already used to it. It was no big deal. In fact, if he went a day without hearing it, he felt uncomfortable all over.

"You'll have a hard time after getting married like this..." Jiraiya lamented Minato's misfortune and resented his lack of fight. Then he remembered that he was still single himself and had no real standing to lecture anyone, so he changed the subject. "I called you over because I have something amazing to show you."

"Is it a novel you wrote after gathering material? I'll pass on that kind of thing..." Minato really wanted to read it, but he still refused. He and Kushina were deeply in love right now; if she found out, he would be finished.

"Honestly, is my image in your minds really that bad?" Jiraiya formed a chakra-filled sphere in one hand and showed it off. "Well? The secret technique you painstakingly researched for three years—I've already mastered it. Impressive, right?"

"That's incredible. Just as expected of Jiraiya-sensei," Minato praised sincerely.

"Is that Hand Seal-less Ninjutsu?" Duke poked his head out from behind Minato, pretending not to recognize it as he asked curiously.

"Come to think of it, I wanted to ask earlier. Who's this brat?" Jiraiya dispersed the Rasengan in his hand and stared at Duke for a while. Then his eyes widened in shock. "So cute, and he's actually a boy!"

"He's Zixiao-senpai's child. His name is Duke. Senpai asked me to look after him," Minato explained.

"Oh, so he's Zixiao's kid!"

"You're amazing, mister. You could tell at a glance that I'm a boy. You're the first person who's managed it!" Duke exclaimed in surprise. As expected of the one pervert among the Sannin, the man known as a lecher. The three-dimensional sensors between his legs really were superior to ordinary people's.

"Ahahahaha! Brat, who do you think I am? I'm Jiraiya, the Toad Sage of Mount Myōboku!" Flattered by the praise, Jiraiya became smug. His wooden clogs clacked as he hopped around and performed a dance that Duke found incredibly lame, proudly striking a pose.

Awkward silence! After watching someone's self-written, self-directed, bizarre dance, both Duke and Minato nearly died of embarrassment.

"So you're the Pervy Sage! That Hand Seal-less Ninjutsu from earlier was amazing. Can you do it again?"

Duke was extremely interested in the Rasengan. It was one of the most frequently used ninjutsu in the original story, crushing bosses left and right and curing all forms of defiance. Once all sorts of chakra nature transformations were added later on, it became absurdly powerful.

"I'm the Toad Sage, not the Pervy Sage," Jiraiya corrected. Then he asked unhappily, "Why should I perform it for you? Are we that familiar?"

Duke froze. Jiraiya really had no obligation to demonstrate it for him, because they... really were not familiar. But that was no problem. Against a ninja like Jiraiya, whose blood was saturated with an excessive amount of lechery, Duke had a ninjutsu he absolutely could not resist.

"Leaf Village Secret Technique: Sexy Jutsu!"

With a puff, the white smoke dispersed, revealing before Minato and Jiraiya a tall, stunning beauty with straight black hair, voluptuous curves, and a devilishly seductive figure. Her revealing black one-piece bikini outlined her perfect body, creating a powerful visual contrast against her pale skin that stole souls and bewitched hearts. Ripples stirred in her alluring eyes, and one slender jade finger rested against her soft pink lips. The beauty leaned forward into an S-shaped pose, her fierce white rabbits squeezed together to form an unfathomably deep cleavage.

"Please, Pervy Sage!"

Just as expected, Jiraiya's eyes turned red, his nostrils heaved, and his hands grasped wildly at empty air as drool spilled all over the ground. At Duke's bone-meltingly sweet and seductive cry, two streams of blood shot from his nose, and he collapsed unconscious.

"Minato-sensei, the Pervy Sage fainted." Duke transformed back, looking at Jiraiya as blood continued to spurt from his nose, and shouted. If they did not save him soon, Konoha would lose its second Sannin.

That makes no sense! Naruto's Sexy Jutsu even took off its underwear, yet Jiraiya didn't react like this. Could it be that straight black hair suits his taste better than blonde twin tails? No, Tsunade has blonde twin tails, doesn't she? Duke did not realize that Naruto's Sexy Jutsu would not appear before Jiraiya until nearly twenty years later. By then, Jiraiya would have been away from the village for many years and seen every kind of scene imaginable. But right now, perhaps he had not even had his first taste of a woman!

Minato stood there with his mouth wide open, stunned by Duke's utterly ridiculous ninjutsu. However, if one looked closely, they could notice his hurried breathing. It was probably because Duke had transformed with his back toward him and stuck out that perky butt, and some things of unknown significance had dealt him a heavy blow. So even the most perfect Hokage had been a hot-blooded young man in his youth. It was understandable!

Minato bent over and shook Jiraiya incessantly until he woke up. Then there were two men bent over. In a sense, Duke's move had taken down two Kage-level powerhouses. Although he had copied it, Duke shamelessly declared that since he had used it first, the copyright belonged to him.

"Your name is Duke, right?" With two wads of tissue stuffed into his nostrils, Jiraiya gave Duke a thumbs-up. "I take back what I said earlier. Anyone who can invent such a great ninjutsu is definitely a genius."

If he had not been bent over and did not have tissues stuffed up his nostrils, those words would have been much more convincing.

"Then that Hand Seal-less Ninjutsu from earlier..." Duke asked expectantly.

"I can demonstrate it as many times as you want, but..." Jiraiya gave a lecherous grin. "In exchange, you have to demonstrate that Leaf Village Secret Technique too."

"Just demonstrate it... But I want to learn that move too!"

"That's difficult. This is Minato's ninjutsu. Without his permission, I can't teach it to you." Jiraiya had principles and firmly refused.

"I have another Leaf Village Secret Technique called Harem Jutsu. It can transform me into more than ten big sisters like that one just now, and... they won't be wearing clothes!"

"You truly are a genius. I'll agree on Minato's behalf. I'll definitely teach you this ninjutsu."

One could not expect much integrity from a lecher. In truth, to Jiraiya, integrity was sometimes less important than a pair of unwashed underwear.

Minato's mouth twitched at the side. He somewhat regretted handing the Rasengan over to Jiraiya-sensei. This shameless transaction had caused the Rasengan's value to plummet until it was worth the same as underwear.

On Konoha's outskirts, beside a waterfall.

Jiraiya taught Duke hands-on. Minato and Kushina sat leaning against a tree shoulder to shoulder, whispering to each other from time to time. The scene was enough to make certain single dogs green with envy, such as Jiraiya. He stared straight ahead and did not dare look.

"The Rasengan is Hand Seal-less Ninjutsu that Minato developed after taking inspiration from the Tailed Beast Ball..."

"What is a Tailed Beast Ball?" Duke played the part of a good student and asked whenever he did not understand.

"A Tailed Beast Ball isn't something you can come into contact with yet, so I won't tell you." Jiraiya shook his head. As a mentor, he was very responsible. He had no intention of teaching knowledge that would not benefit his student.

"Listen carefully. The Rasengan is a high-level ninjutsu that concentrates and compresses chakra in the palm, then spins it at high speed to generate tremendous tearing force and destroy the enemy's defenses. Once it hits an opponent, it can not only inflict surface damage but also temporarily disrupt the enemy's chakra. Among Hand Seal-less Ninjutsu, the Rasengan possesses the highest level of power. Moreover, because this technique has no attribute, it can theoretically develop many variations." Jiraiya spoke seriously, explaining the Rasengan's principles.

"Those variations are still too early for you. Once you've learned the most basic Rasengan, you can research them yourself." Jiraiya pointed at Minato in the distance. "Even the creator of this ninjutsu has no leads yet. It's definitely S-rank difficulty. So let's focus on something practical and start with the Rasengan itself!"

"Then how do I gather chakra in my palm and form a high-speed rotating chakra sphere?"

"This greatly tests the user's chakra control." Jiraiya extended one hand and condensed a mass of blue chakra in the center of his palm. "The first stage is gathering chakra in the palm of your hand."

Duke copied him perfectly, condensing a mass of chakra in his own palm. It did not seem difficult at all.

"Not bad. Your chakra control is excellent." Jiraiya praised him before continuing. "The second stage is a further exercise based on the first stage: releasing chakra steadily and continuously. For example, place a water-filled balloon in your hand, then release chakra to make the water inside move irregularly until the balloon bursts. We'll need some props here..."

As Jiraiya spoke, his attention was drawn to the chakra rampaging around in Duke's hand. Experience told him that Duke had already mastered the second stage.

"I underestimated you. You did well!" Jiraiya was delighted. Every teacher liked intelligent students, because they gave them a sense of accomplishment as mentors.

"I have a foundation in Medical Ninjutsu, so I'm quite confident in my chakra control."