"How can I become as strong as you?" Kushina asked. Shishou glanced at her but did not answer, continuing to look at the distant scenery.
He only wanted to invest time and effort into making his own women stronger. Even if someone like Shizune, Hinata, or Ino didn't have much talent and their growth was slow, Shishou enjoyed the process of nurturing them. But if they weren't his women, he wouldn't waste his time.
Although Kushina had verbally agreed to be his wife, it was just words. If she wanted to become stronger, she would have to ask him sincerely, so he could have control over her.
Not getting an answer, Kushina bit her lip. After a long time of consideration, she finally decided to compromise for Naruto's safety. She had to become stronger to protect him.
"If... If you can make me stronger, I..." Kushina struggled to speak, then trailed off. Shishou watched her struggle without rushing or speaking, just smiling at her.
Finally, after a lengthy internal battle, Kushina, feeling defeated, glared at Shishou and said loudly, "If you can make me stronger, I'll be your wife."
After saying this, Kushina felt a bit relieved. Shishou didn't immediately agree but instead shook his head, "How can I believe you'll keep your word?"
"After all, the fact that you can say this now means you didn't plan to keep your previous promise to be my wife. And with your current small body, I can't do anything to you. When will you fulfill your duties as a wife? Probably never. Is that what you were thinking?"
Finishing his speech, Shishou smiled at Kushina, waiting to see what she would do next. Now that the tables had turned, he intended to drive a hard bargain.
Kushina blushed at his words. He had accurately guessed her previous intentions. She was caught off guard by how smart he was, no wonder he could memorize all the complex knowledge of the Flying Thunder God technique in such a short time.
After some thought, Kushina glared at Shishou, turned around, and hesitantly started taking off her clothes, her face red with embarrassment. "Are you satisfied now?" she said through gritted teeth.
Shishou chuckled, "Considering what you're doing, I'll reluctantly believe you."
"You're such a pervert!"
"Thanks for the compliment."
"..."
...
In Shishou's secret laboratory.
"So, can you still utilize the Uzumaki clan's bloodline power?" Shishou asked curiously after Kushina finished an experiment.
Flying in front of Shishou, Kushina looked very dejected. "I can feel that my use of the Uzumaki clan's sealing techniques has weakened significantly. It's also more difficult than before. It seems I really don't have the Uzumaki bloodline anymore. What should I do?" She looked anxiously at Shishou.
Shishou had anticipated this outcome. He asked, "Did you notice anything else?"
He needed to understand Kushina's specific condition to make further plans for her.
Kushina frowned and thought for a moment, then said uncertainly, "When I use ninjutsu, it feels much smoother than before. And it feels like there's some kind of energy surrounding my body."
Ninjutsu affinity and natural affinity?
Hearing Kushina's words, Shishou remembered the system's description of the Spirit Insect·Kushina. So, the energy surrounding her might actually be senjutsu energy?
Perhaps Kushina should give up on the Uzumaki clan's sealing techniques and start learning senjutsu instead.
Glancing at Kushina's small body, Shishou smiled and said, "Could it be because your body is too small now?"
Kushina had just hatched from the insect egg. If she could grow quickly, her strength might rapidly increase, allowing her to advance faster.
Making Kushina grow quickly was an easy task for Shishou.
"That might be possible," Kushina nodded.
"I have a way to make you grow quickly. Want to try?" Shishou asked with a smile.
"Really?" Kushina looked at Shishou with surprise.
Shishou extended his right hand, "Stand here."
"Okay." Kushina quickly flew onto Shishou's palm, her face full of anticipation. She was willing to try anything to grow quickly and increase her strength.
Once Kushina was in place, Shishou's Sharingan appeared, spinning rapidly. "Sharingan?" Kushina gasped in surprise, seeing the blood-red eyes.
She never expected Shishou to have the Sharingan, and not just any Sharingan but a special one. In the next moment, she felt her body expanding rapidly, growing from the size of a finger to the size of a hand.
"I really grew bigger," Kushina exclaimed with joy, seeing her body had more than doubled in size.
While Kushina was amazed, Shishou was equally shocked. Accelerating Kushina's growth had consumed a significant amount of his chakra, about one-tenth of it, which was three to four hundred chakra points.
Such a large consumption was unprecedented for him, but it also indicated Kushina's potential was immense. This was a good sign.
"Ah, why do I suddenly feel so sleepy?" Kushina yawned, flying onto Shishou's shoulder and sitting down. "I'll take a nap first, then we'll continue..."
She fell asleep on his shoulder mid-sentence.
[Ding! Spirit Insect·Kushina has entered an advanced state. Please place her in the insect nurturing space or keep her within ten meters. Advancement time: 15 days.]
[Do not disturb or summon during the advancement period.]
This fanfiction is complete on my Patreon. If you want to read it, you can find it at patreon.com/Betek.