"Man, I should've picked a cool new Jutsu instead— why didn't you stop me, when I asked Granny Tsunade for free ramen?" Naruto complained as the trio walked out of the Hokage's office. "C'mon, Sasuke, lemme see what you got from the Scroll of Secrets— just a little peek won't hurt, y'know!"
Naruto suddenly reached for Sasuke's Jutsu scroll, but Sasuke held it out of his reach.
"Should've thought about it yourself, idiot," Sasuke taunted him. "Maybe it'll teach you to think with your head, rather than with your stomach…"
And with that, Sasuke made his scroll vanish with a flick of his hand. Annoyed by Sasuke's refusal, Naruto lunged at his teammate, grabbing his sleeve in an attempt to shake out the hidden scroll— and just like that, the two boys were at each other's throats again.
"Come on," giggled Sakura, "let's not have a fight just outside Lady Tsunade's door…"
"Ah, Sakura-chan…"
Sakura turned around and saw that the door to the Hokage's office had opened a sliver. Shizune had poked her head through the gap, and she was beckoning her to come closer…
'Oh crap,' gasped Inner Sakura. 'I knew this was too good to be true!'
Lady Tsunade had refrained from commenting on Sakura's growth spurt earlier, when Naruto and Sasuke had been there with her in her office. However, with the male gaze now out of the way, it seemed like her punishment for disobeying orders was finally at hand…!
Shizune ushered Sakura back into the Hokage's office and closed the door behind them. Sakura tentatively glanced in Tsunade's direction, but much to her surprise, there was a slight smile on the older woman's face.
"Congratulations, Sakura," said Tsunade, looking up from the piles of paperwork on her desk. "It's been long enough, so I'd say you've passed my test."
Sakura's head tilted in confusion. Test? What test? Was this some kind of trick!?
"It's been a few weeks since I asked you to stop absorbing breasts," explained Tsunade. "You've been out of the village a few times since then, but you haven't succumbed to the temptation, proving yourself worthy of trust."
"But…" said Sakura hesitantly, palming her heavy bust. "I'm clearly bigger than I used to. How can you tell…?"
It wasn't as if Sakura had hidden the evidence of her breast hunt— there was no minimizer in the world that could hide a magnificent pair such as the one hanging off Sakura's chest.
"It's your chakra signature, Sakura-chan, it hasn't changed in a while," explained Shizune. "The Barrier Team noticed it sometimes changed when you returned to the village— so, combining that information with the growth journal Kakashi kept of you, Lady Tsunade guessed it must have something to do with that slashing and absorbing technique of yours…"
It was incredibly lucky that Sakura hadn't encountered any kunoichi worth draining over the past month, and that the only woman she had ended up stealing breasts from possessed no trace of chakra in her body.
"Kakashi's been keeping track of my three sizes!?" spluttered Sakura. "That's an invasion of my privacy!"
"I'm sorry, but it had to be done," said Tsunade firmly. "We had to know for certain if you were trustworthy."
The village needed strong soldiers, that much was true— but it did not need soldiers who could grow exponentially at the expense of others. The last thing the Hidden Leaf needed was a second Orochimaru devouring the village from within, before escaping its sphere of influence…
"Does that mean you're lifting the restrictions you placed on me?" asked Sakura hopefully.
"That's right," said Tsunade, a slight smile tugging at her lips. "Although, bear in mind that Kekkei Genkai kunoichi from the other four villages are still off-limits, but other than those… knock yourself out."
Sakura jumped for joy, causing her breasts to slap together with an audible smack.
"I think she's grown even larger than you, Milady," said Shizune, as she watched Sakura's breasts continue to jiggle for a few seconds after she landed. "I never thought I'd see the day…"
Tsunade's eyes narrowed dangerously.
"That's not possible," she snapped. "Shizune— bring out the measuring tape. You— don't move even one centimetre from where you're standing. We're settling this once and for all."
Tsunade didn't brag or even humblebrag about her awe-inspiring bust. In fact, she rarely addressed the twin elephants in the room, as the topic of boobs rarely came up in polite conversation.
However, she did know people gossiped about her size behind her back, and she did draw a certain amount of satisfaction from the attention. But now, a new challenger had risen up to face her, so she had to know: was she still the queen of boobs?
"Pardon me, Milady," said Shizune, as she looped her measuring tape under her mistress's armpits. "Let's see… 77.5 cm under… and… whoa. 106 cm over."
That was a difference of 28.5 cm, which officially made Tsunade an H-cup in most of Earth's countries. (More precisely: an US 34H, an UK 34FF, and a JP 75I)
"I'm really sorry I got you wrapped up in this, Sakura-chan," said Shizune apologetically, as she approached her with her measuring tape. "Now, go on— banzai…"
Sakura lifted her arms above her head and allowed Shizune to take her measurements.
"So… 68 cm for the under bust," Shizune announced. "And… oh my. 107cm for the over bust."
That was a whopping 39 cm difference between Sakura's under bust and her over bust, which made her an L-cup, just as the System had calculated. (More precisely: a US 30L, a UK 30HH, and a JP 65M)
In actually measurable terms, Tsunade's H-cups took up 1180 cubic centimetres (cc) of volume, while Sakura's L-cups took up 1580 cc of volume, making Sakura the clear winner of this little contest.
"I can't believe this," Tsunade murmured despondently. "It wasn't just an optical illusion? I actually… lost!?"
Tsunade had assumed that Sakura's sheer explosiveness was only due to the large size difference between her bust and her thin frame, but her disciple had actually bested her in all categories!
Properly shell-shocked, Tsunade fell backwards into her chair, staring vacantly into space… and that's when she saw an eye staring back at her through her office door's keyhole.
"Quit pushing, Sasuke!" came Naruto's hushed voice from the other side of the door. "You'll get your turn when I'm done!"
"I'm not trying to look," Sasuke hissed back at him. "I'm trying to stop you from peeping, you damned voyeur!"
…
…
"I don't hear anything any more," came Sasuke's muffled voice. "What's happening on the other side?"
…
…
…
"NARUTOOOOO!" shouted Tsunade. "GET IN HERE, YOU LITTLE—!"
"Oh, crap— run!"