After only a single afternoon of training in the backyard, Mitsuki Mui already felt her mastery over the Three Basic Techniques had reached an impressive level.
Paired with her current speed of three seals per second, the results were undeniable.
Once upon a time, Kakashi could spar with her on nearly equal footing. But in today's practice, he was utterly crushed.
"Damn it… you freak…"
Kakashi muttered in frustration, rubbing the swollen spot on his forehead while watching Mui calmly prepare dinner.
Two years ago, when this girl first moved in next door, Kakashi was only just old enough to start forming memories.
He remembered clearly—when he learned that their new neighbor was the daughter of the White Fang of Konoha, he had gone straight over, eager to ask for training.
But his father had refused.
Kakashi was still too young.
Even though Mitsuki Mui was a year older than him, her body hadn't been cultivated from birth the way shinobi clans sometimes trained their children. The difference in physical ability had been too great.
Kakashi also remembered how, when he was little, all of his father's mission pay had been spent on medicinal herbs just to strengthen his frail body. Even now, despite that effort, his physique was still weaker than that of an average genin.
And since their family wasn't part of a clan like the Uchiha, the fame of the White Fang could only stretch so far. At most, Sakumo could offer Mui occasional advice on physical training.
So, while Kakashi trained, Mitsuki Mui had no choice but to sit on the sidelines and watch.
To be honest, it had embarrassed him back then. But everything changed a few days ago.
It began when Mui casually mentioned she had found a chakra refinement method in her home.
At first, the White Fang had tried to forbid her from training. But by then, Mui had already completed the exercise.
And afterward… this woman demonstrated in front of both Kakashi and Sakumo exactly what it meant to be a genius.
Day One: Kakashi versus Mitsuki Mui.Result: Kakashi's complete victory.
Day Two: Kakashi versus Mitsuki Mui.Result: Kakashi's narrow victory.
Day Three: Kakashi versus Mitsuki Mui.Result: Draw.
Day Four—today. Armed with the Three Basic Techniques, Mitsuki Mui utterly destroyed Kakashi.
"Hey, hey… if you keep calling me a freak, do you even want to eat dinner?"
"…I was wrong."
Mui replied bluntly, but in truth, her heart was soaring with delight.
Hahaha! You see? This is the true power of AA-rank breasts!
Of course, even as she rejoiced inwardly, she felt a pang of frustration.
She could already sense the unnatural speed at which her chest was developing. If not for that, at her current age she should still be completely flat-chested—meaning her talent would be explosively higher, far beyond what she had now. Instead, because of her body's accelerated development, her cultivation speed would soon decrease.
Mui estimated she had maybe a year at most—half a year if things went poorly—before her talent slipped down from AA-rank to A-rank.
So she had to seize the present moment. As long as she trained hard now, then even if her talent eventually dropped to G-rank, she'd still have enough strength to survive.
As for H-rank… seven-second memory loss? Forget it. If that ever happened, she might as well just die.
"By the way, when's your old man coming back?"
"…This time he's on a battlefield mission. If things go well, a month. If not… there's no telling."
"I see."
Mui raised her eyebrows, her mood souring slightly. If Sakumo didn't return until after her talent had already dropped to A-rank, she would lose the chance to train under the White Fang's guidance while still at her peak speed. That would be a disaster.
"What's wrong? Is there something you need?"
Mui thought for a moment before speaking. "I'll tell you, but you can't repeat it to anyone."
"Alright, I got it. Now out with it."
"Mm. A few days ago, I discovered something about myself."
"What is it?"
"The smaller my chest is, the faster my training speed."
Bam!
"Wh—what kind of joke is that—?!" Kakashi's face went crimson in an instant.
Mui grinned.
"Hahaha… no, really, I'm not joking. It's absolutely true. The smaller my chest, the faster I train. Right now I'm AA-rank. Once I develop to B-cup, my cultivation speed will probably be about the same as yours."
"…R-really?"
"Yep. So it's all that guy Sakumo's fault! If not for him, I'd already be a Kage-level powerhouse by now! Anyway, enough talk—come on, eat. I've got to keep training while my chest is still small!"
Kakashi: "…"