After using practical actions to upgrade Tsunade's nickname for him from "brat" to "husband" and then to "DADDY," Uchiha Shin felt a deep sense of accomplishment.
He had almost lost several times in the battle of endurance, but fortunately, years of rigorous training had conditioned his body, allowing him to hold on and ultimately claim victory.
"You have the Yin Seal, and so do I. I also have Chakra Flow mastery. Tsunade, you still haven't fully mastered the fundamentals of Navy Six Styles yet!"
Smack!
A sharp slap echoed in the dimly lit room, and the familiar sting on butt instantly snapped Tsunade out of her sleep.
Already accustomed to this sort of discipline, Tsunade lazily rolled her eyes at Uchiha Shin and muttered, "Don't call me Shin-kun, I've already surrendered."
Her husky, drowsy voice carried a sultry charm that sent a shiver down Shin's spine.
"That's more like it~"
Feeling victorious, Uchiha Shin collapsed into Tsunade's embrace, no longer in the mood to boast about his strategic conquest.
Instead, he just wanted to sleep and recover from the previous night's exertion.
The two of them closed their eyes, and before they knew it, an entire day had passed.
BANG BANG BANG!!!
As the evening rolled in, urgent knocks on the door jolted both of them awake just as they were about to resume training.
Sensing the chakra signatures outside, Uchiha Shin immediately sobered up.
"Tsunade, you're getting too addicted. Wake up!"
Still half-asleep, Tsunade instinctively pulled Shin into her arms and held him tightly.
"Be gentle~" she murmured, her voice weak and seductive.
Shin's eye twitched. "I mean, Mikoto and the others are here."
"Hmm, then… Eh!?"
Tsunade's golden eyes snapped open. She shoved Shin away, scrambling to grab her robe from the bedside table.
But as soon as she looked down at it, she froze. Her usual coat and shirt had been completely shredded.
"You brat, you've gone too far!"
Tsunade shot Shin a fierce glare, intending to get up and grab fresh clothes, but the moment she tried to stand, her legs gave out, and she collapsed back onto the futon.
Only now did she realize the battle scars covering her body—red and purple marks that ran across her skin. Even with the Yin Seal, it would take time to fully recover.
Seeing her struggle, Shin pressed her back onto the futon and covered her with a blanket. "Just pretend to be asleep. I'll handle them."
Tsunade, face flushed red, nodded and buried herself under the covers. "Fine, I'll go along with it."
Shin exhaled, then formed a quick hand seal. "Wind Release: Great Breakthrough."
A powerful gust swept through the room, clearing the air before he hurriedly dressed and made his way to the door.
With a bright smile, he swung it open.
Standing there were Mikoto and Kushina.
Kushina crossed her arms and smirked at Mikoto. "See? Told ya he was here!"
Mikoto had been worried when she couldn't find Shin, so Kushina had used her Kagura's Mind's Eye to track him down.
Mikoto tilted her head. "Shin-kun, you weren't home all night. Why are you at Tsunade-sensei's house?"
Shin coughed lightly. "Ah, well… she drank too much last night. I had to bring her back, clean her up, and make sure she was okay. I was up all night, so I crashed here."
Mikoto frowned slightly. Something about his explanation felt off, but she couldn't quite put her finger on it.
After all, Tsunade was her teacher. There was no reason to suspect anything… inappropriate.
Before Mikoto could think any further, Misaki, who had come along out of concern for Tsunade, stepped forward. "Sensei hasn't woken up yet? I'll make her some hangover soup."
"I'll help too!" Kushina added cheerfully.
Shin wiped the sweat from his brow as they walked past him and into the house.
He glanced toward the bedroom, where Tsunade had quickly resumed her act of being unconscious.
Deep down, she felt a mix of emotions—guilt, excitement, and a strange sense of thrill.
But she maintained her composure, perfectly fooling Mikoto and Kushina with her Oscar-worthy performance.
Once the situation was under control, Shin let out a relieved sigh.
"Next time, I need to manage my time better."
A few days passed, and before he knew it, visiting Tsunade had become a daily habit.
The results were evident—Tsunade, already blessed with an exquisite figure, had grown even more plump in certain areas, something Shin had measured with precise… hands-on observations.
Even Mikoto and the others, despite being women themselves, had started to notice. They had taken to jokingly saying, "Tsunade-sama looks even more radiant these days."
Tsunade basked in the compliments. If her body could handle more, she might have pushed Shin even further.
Shin, for his part, found himself silently thanking his past self for rigorously training his body with Lightning Release Chakra Mode and enhancing it with various techniques. Without them, he would have long since collapsed in battle against the Thousand Hands physique.
After a full month of indulgence, Shin finally regained his senses.
"You need to snap out of it, Shin. You're losing your edge!"
From inside the house, Tsunade's voice called out playfully. "What are you talking about? I'm even wearing those fishnet clothes you like today."
Shin's mind short-circuited for a moment, and a familiar tune played in his head.
[Big-headed son, small-headed father~]
That day, he fell into despair once more.
But reality soon hit him. If he didn't wake up soon, he would be the one getting drained.
Tsunade, nearing her thirties, was only getting stronger. This little stallion wasn't sure how much longer he could keep up.
"I need to train. I'm heading to the Shikkotsu Forest to master Sage Mode! No more distractions for now. Later!"
Without wasting another second, Shin sprang from the bed, hastily pulled on his clothes, and turned to Tsunade. "Summon Katsuyu and send me there."
Tsunade, still lounging lazily on the bed, smirked. "Oh~? But you were so hard-working before. Alright, alright, I'll let Mikoto and the others know."
She stretched out, her bare skin still faintly flushed from earlier, her every movement exuding a seductive charm. Her fingers lightly traced the curves of her thighs, accentuating her already breathtaking allure.
Looking at her, Shin felt like he was staring at a succubus ready to devour his very soul.
Fortunately, Tsunade was satisfied for now, so she simply threw on a loose robe and summoned Katsuyu without further teasing.
With a determined heart, Shin left, vowing to return even stronger.
This war was far from over.
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Bonus Chapter - 150 Power Stones