Once Sakura had healed her right hand's broken bones, she set about harvesting her spoils of war. Although she was disappointed that she had failed to turn Darui into a woman and obtain his Storm Style Kekkei Genkai amidst the chaos of disco ball laser fire, there was still plenty to be obtained.
The Sage Art of a Thousand Cherry Blossoms had crystallised thousands of Kumo-nin, many of them kunoichi specially trained to withstand her powerful genjutsu. As she walked amongst the forest of statues, she found a few familiar faces immortalised in crystal amongst the fallen...
"Release!"
Karui burst into a coughing fit, spitting out a few crystal shards as she turned back to flesh and blood, only for Sakura to immediately slash her plump, chocolate-coloured orbs with her sword, deflating her bountiful chest to washboard status in a matter of seconds. This was Chōji's future wife, and although Sakura was reluctant to leave her trapped in crystal again, it seemed unlikely they would ever marry in this timeline.
[Ding! Congratulations to the Host for obtaining Samui's breast chakra left to steep in Karui's chest! To redeem Lightning Style: Godspeed, please obtain the breast chakra of a Swift Style kunoichi!]
"It's not as if I really need that any more," Sakura muttered dejectedly to herself. "I'm more than fast enough using Sage Mode and Shisui's Body Flicker…"
In any case, Karui, Samui, and Omoi appeared to be close to the Raikage's circle of power, so Sakura quickly recrystallised Karui and sealed the trio's statues inside a scroll for transport back to the Hidden Leaf, where they would undergo a spot of friendly interrogation at the hands of Morino Ibiki, head of Konoha's Torture and Interrogation Force.
Once the VIPs were secured, Sakura started reviving kunoichi and draining their breast chakra.
Following the Battle for the Hole, her bustline had increased to an astonishing 145 cm, though she had to bend over ninety degrees in order to measure them properly without the System's help, since not even her legendarily powerful ligaments could support that much weight.
According to (American) bra-sizing conventions, that was the equivalent of an X-cup, far beyond any conventional size that existed in any world inhabited by human women.
"Don't you think you're already big enough, Sakura-chan?" Naruto said tentatively as Sakura methodically moved from woman to woman, thawing them, harvesting them, then freezing them back up again. "My back hurts just looking at you, ya know?"
Sakura had removed her sealing bra just in case it interfered with Breast Flow.
"I have to become stronger to protect the village. The other four started this war, and I aim to finish it... they knew very well what would happen to their kunoichi if they sent them to me, and I have no intention of refusing any advantage if it'll save lives," she gasped. "And why are you still hanging around? Go bother Sasuke. This is embarrassing enough without you staring..."
Naruto sadly stalked over to Sasuke's side. Poor Sasuke had overexerted himself with the Susano'o and everything, and was currently lying on his back staring at the sky, internally cursing his very ordinary chakra pool.
"How much more of this can my body endure…?" Sakura whispered to herself. "My back hurts…"
Without her breasts, Sakura weighed around 70 kg, which was still rather heavy for a girl of her height. On the shinobi continent, the average cup size ranged from A to B (by American bra standards), so even without doing the maths, she could estimate that she would need at least a hundred women's worth of breasts for her chest to match the rest of her body in weight… and there were thousands to choose from here.
Slash! Slash! Slash!
Sakura's enormous X-cup udders shuddered and creaked as they swelled to a Y-cup, steadily lowering towards the ground before expanding again into a Z-cup. They were so heavy… it felt like she had a three-year-old child permanently latched to her front.
[Ding! Congratulations to the Host for reaching the final letter of the alphabet!]
"Where's my reward?" Sakura groaned after a few seconds.
The System had fallen uncharacteristically silent.
[The Host's spirituality has reached the limit of what the System can infuse it with. The 0.5 KK chakra bonus given upon reaching any new cup size past I-cup will no longer be awarded past Z-cup. Final total: 9 KK.]
So, it turned out that all this time, the System had been increasing her chakra by boosting her spiritual energy. It was a bit disappointing that the System had nothing to give her for this momentous achievement, but even so, with each breast she cut down and absorbed, she was still growing stronger…
Ten, twenty, thirty, forty pairs of breasts…
When the pain in her chest grew too intense to bear, Sakura summoned four Shadow Clones, each with their own enormous pair of boobs.
"Shadow Clone Jutsu!"
The Shadow Clones took out her special Manyū lotion and lathered it over her reddened, overstretched skin, applying the Mystical Palm Jutsu to her overinflated balloons even as she continued tirelessly harvesting more and more women. It was just as well she had summoned them when she did, because her mobility rapidly diminished the more that she grew.
Fifty, sixty, seventy, eight, ninety women harvested…
As Sakura's bustline exceeded two metres, the lower curve of her chest began approaching the ground. At this point, she couldn't even walk without painfully kneeing the underside of her breasts, even when she arced her back. She could barely reach anything in front of her past her chest, but with her smaller Shadow Clones' help, she managed.
Ninety-one, ninety-two, ninety-three, ninety-four, ninety-five, ninety-six, ninety-seven, ninety-eight, ninety-nine… one hundred.
"Status…!" Sakura squeaked out as she collapsed forwards into her cleavage, her thin body sliding into the gap between her round, mountainous breasts. Try as she might, she could not get back to her feet; there was simply nowhere for her to push off from but oozing boob flesh.
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Name: Manyū Sakura, Sixth Hokage of the Hidden Leaf
Species: 79.6% ->99.9% Human (with a 0.1% margin for error)
Age: 17
Breast: 34W (144 cm) ->34-37Z (243 cm)
Waist: 58.5 ->60 cm
Hips: 120 cm
Height: 175->174 cm
Weight: 80->150 kg
(Note: measurements are compared to the last time the Status Panel was checked, not the actual previous size)
System: Let's Aim to Become the Best Kunoichi, Kyuun~♥ Breast Flow System
Manyuu Chifusa Template progress: 50% (locked)
Bloodline Limit (Kekkei Genkai): Breast Flow, Psychosomatic Illusions, Mangekyō Sharingan, Byakugan, Wood Style, Death Perception Dōjutsu, Plasma Style, Crystal Style, Scorch Style, Explosion Style, Ice Style
Physiques: Manyū-Munamori Hybrid, Kurama, Uchiha, Hyūga, Hashirama Cells, Awakened Spirit World, Akimichi Fat-Accumulating, Inuzuka Nose, Aburame Hive Colony, Uzumaki Lifeforce
(Currently lost: Senju)
Chakra Capacity: 198 KK
Chakra Control: 5 S
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Fire: 200%: Great Fireball, Ash Pile Burning
Wind: 185%: Great Breakthrough, Vacuum Blade, Gale Palms
Lightning: 190%: Chidori, Lorentz Gun, Lightning Chakra Enhanced Strength, Lightning Style Chakra Mode (incomplete)
Earth: 185%: Startling Earth Escape, Rampart of Flowing Soil, Sandwich, Stone Fist
Water: 185%: Starch Syrup Capturing Field, Waterfall Basin, Water Trumpet
Yin: 108 %: Clone, Genjutsu Release, Bell Sound Clone, Tree Binding Death, Breast Illusion, Sleep, Temple of Nirvana, Demonic Illusion: False Surroundings Technique, Sharingan Genjutsu: Saimingan, Bringer-of-Darkness, Shadow Imitation, Shadow Stitching, Mind Body Switch, Mind Destruction
Yang: 108 %: Transformation, Transformation (Tsunade Ver.), Shadow Clone, Shuriken Shadow Clone, Mystical Palms, Kaeru Kaeru no Jutsu, Multi-Size Expansion
Wood: Cutting Sprigs, Foo Dog Heads, Nativity of a Sea of Trees (Deep Forest Emergence), Wood Human, Wood Clone, Four-Pillar House
Plasma: Absolute Extreme Poles Electro-Plasma Thunderclap Railburst: Super Sakura-Flavoured Dango Caster Mk. IV with Gold Leaf Sprinkles on Top
Scorch: Extremely Steaming Murder, Great Steaming Explosive Blast
Crystal: Ruby Crystal Labyrinth, Jade Crystal Mirror, Jade Crystal Prison, Jade Crystal Clone, Sapphire Crystal Senbon, Sapphire Crystal Blade, Tearing Crystal Falling Dragon, Crystal Wheel, Diamond Crystal Armour, Senbonzakura: Emergence of A Thousand Cherry Trees
Explosion: Landmine Fist
Ice: Ice Smashing Hammer, Chains of Earthen Ice, Coiling Ice Dragon
(Note: With the Sharingan's aid, the Host can instantly learn any bloodline-limited jutsu performed within her sight, provided she possesses the corresponding Kekkei Genkai or acquires it within minutes of witnessing the technique)
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Space-Time Ninjutsu: Summoning: Katsuyu
Fūinjutsu: Yin Seal, Breast Seal, Celestial Lotus Seal (three petals), Celestial Empress Lotus Seal (five petals)
Kinjutsu: Breast Diet, Rasenshuriken, Creation Rebirth: Mitotic Regeneration, Kotoamatsukami, Ame-no-Uzume, Izanagi, Susano'o, Yin-Yang Gender Reversal
Jujutsu: Thousand-Armed Deprivation Grudge Manifestation
Senjutsu (only): Organic Reincarnation Living Matter Manipulation, Passive Sensing
Generic applications of chakra: Body Flicker, Substitution, Eight Trigrams Palms Revolving Heaven, Eight Trigrams Sixteen Palms, Chakra Enhanced Strength, Chakra Scalpel, Rasengan, Area Scanning, Body Revival, Mind's Eye of the Kagura, Chakra Suppression
Manyū Hikenchō techniques: Manyū kenjutsu, Munamori massage, Purifying Slash
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In a single night, Sakura had increased her bustline by an entire metre and doubled her weight… and somehow aged forwards a few days.
"I'm seventeen? What gives?" Sakura groaned. "It's still a week to my birthday…"
[Verifying… Ding! The System's internal clock is accurate. The Host's body continued ageing normally within the Limited Tsukuyomi and during the Host's jaunt to the world of twenty years in the past.]
"34-37Z?" Sakura then asked. "Why are there two numbers…?"
[Beep! 34 is still the band size, and 37 means the Host is 36 cup sizes above Z-cup. Just like DD is equivalent to E, and DDD is equivalent to EE and F.]
"Ha…haha…" Sakura laughed weakly. "198 KK… I have twice as much chakra as Naruto…"
But if the straps of her sealing bra ever snapped… she would instantly find herself immobilised.