When she finally opened her eyes, Sakura felt terrible. Her vision was blurry, her jaw ached, her forehead burnt, cold stones dug into her back, her arms and legs were cramped up, and she was desperately spitting out mouthfuls of blood in order to clear her lungs that were aching for a fresh breath of air.
And she was alive.
Once her coughing fit had ended, Sakura took a few seconds to take in deep breaths while thanking all the Gods, Demons and Saints out there that this crazy plan had actually worked. The plan being that when her Inner had taken over the body, this would allow her survival instincts to kick in, forcing the release of her Yin Seal.
The Yin Seal, a rhombus shaped purple diamond in the middle of her forehead, was a jutsu Tsunade-sama had taught her. For the past 4 years, since her Shishou had started teaching her the technic, Sakura had been continuously storing chakra into the seal. Her Inner had released the seal, allowing all the foreign chakra she had stoked away to course through her body, opening up her closed chakra points, and dissipating the Genjutsu she had been locked up in. This had allowed her to activate the Ninja Art Genesis Rebirth, and heal her tongue before she died of blood loss, or drowned in the viscous liquid.
Ignoring the pain as her body healed itself, Sakura strained her neck to look at the chains that were holding her down, a slow smile tugged at her lips when she noticed that they were regular rusty chains, tightened and held by hooks cemented into the cell's ground. With her enhanced strength, a good pull would be enough to snap them in two. And once she was free, she would wreak havoc on her way out.
Sakura vaguely felt her Inner mirror her evil grin as they both agreed that they would make that bastard suffer for attacking her teammates, chasing her across half of Iron, knocking her out with a stupid Genjutsu, chaining her down in an old moldy cell, and not even bothering with putting guards to watch over her.
Yes, there will be Hell to pay.