This was a story I started back in 2009

With the his private quarter in the Sound Village located in the Land of Sound (formerly the Land of Rice Fields) looking through his vast collections of scrolls and books that he acquired or just flat out stolen during his life time for anything that might prove useful in his plans to destroy Konoha. His attempt at getting the Land of Wind on his side using the lure of revenge against the Leaf Village for taking jobs their damiyo should be giving to them was only partial success as he only managed to convince them to send single platoon of Suna shinobis with him thus leaving his overall fighting force for his destroying Konoha plan at one company(47 Suna Nins and 69 Sound Nins) plus a snake summon he placed on using and the Kazekage's children and two group of Sound Nin (with one posing leaf genins) which were to act as the official entries to the Chunin Exam.

Yet to make things easier on his forces he was looking through his collection to see if there was jutsu that he could used that was better then sleeping genjutsu he originally thought of using on the crowd at the stadium where the finals to the Chunin Exam were to be held. So far the Snake Sanin was coming up with nothing as he search was not really getting him that much in terms of anything better then simple yet strong sleep genjutsu at affecting a large crowd that would be gather at the stadium but also to those watching on a TV or at a movie theater. Having something that could reach all these people would make the invasion a lot easier since they would all be taken out by the genjutsu thus less resist for his force in their attempt to destroy Konoha.

Orochimaru then managed to slip on scroll that he just did not happen to see and crash into the bookcase behind him. From there a book from the top sleeve fell on his head and right behind him as it top up to raggedy looking page that was not part of the book but had been placed in there anyway with note connected to it regarding what the contains of the page did exactly.

Taking the page in his hand he looked it over and strange language that the page was written in. Though the accusation of first body he stole after perfecting his body switching technique, Orochimaru could fully understand this strange language and if what he was thinking was what this strange jutsu did then it would be the perfect thing for him to use much better then the wide scale sleep genjutsu he was thinking of using.

'Yet who should I test it on' Orochimaru thought as he would need to test this out on someone so that he would be absolutely certain of its effects otherwise it might not be the answer to his current problem after all.

Then idea came to him as he already had plan to get the holder of Kyubi from possibly doing anything significant as well targeting and luring his new body to him. It was rather beneficial to him that Konoha had placed them both of the same team thus he does not have to go far looking for them yet that left the problem of what to do with the third teammate who he had no interest in. Yet thanks his recent discover he found a use for them after all, that use being the test subject for what he had just found.
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Later during the Second Stage of the Chunin Exam…

Sakura Haruno did not know what to do she could not move as she was too scared to do so. The killer intent that was sent towards Sasuke-kun and her had threw her off-balance way more then it had to the Uchiha teammate thus even after Naruto had arrive and managed to snap Sasuke-kun to his sense she was still slightly out of it. Only for Orochimaru to deal with Naruto easily. Then Sasuke was taken out simply by the man extending neck and biting Sasuke's.

"Your teammate are out of the picture and it just you and me now" he said as came closer to the Haruno girl who try at feeble attempt to protect herself by holding her kunai towards him.

"Drop that kunai" Orochimaru told her in commanding tone with slight amount of killer intent to his voice.

Against her will, Sakura's body did as he told her and simply drop the kunai leaving her defenseless again him.

The Snake Sanin then took her face in one hand and made her look him in the eyes as he recited the words from the book he found early word for word while Sakura listening to every word and never being allow to break eye contact either.

Once that was done he used a jutsu similar to the one he had done to Anko years early to make her forget what he had done so that when she came too, Sakura would think that Orochimaru had simply left her alone after taking out Sasuke and Naruto.
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Much later after the whole ordeal with the Sound Genin and Sasuke's acting strange after awakening. The group was on the move with the forest.

'That strange why does my body feel so stiff all of sudden' Sakura thought as moving seem to get harder all of sudden after the sun went down.

"Hey Sakura-chan are you okay you are moving a lot slowing then normal do you want us to slow down a little" Naruto asked as he came to check on her.

"Baka! Are you trying to came me slow or something" Sakura yelled hitting Naruto for saying something like that as while might be true a large amount of the time he did not have to come out and say it like that.

"Maybe we should stop here" Kabuto said who had joined up with them after stopping Sakura and Naruto from opening their scroll.

Though in reality he was really here to ensure they make to the next round as well keep an eye on Sasuke and Sakura who his superior Orochimaru had interested in. With Sasuke it was about the cursed seal though with Sakura it was only to see the result of the strange jutsu that was cast on her since it required no hand signal and needed to spoken a strange language work according to the information the Snake Sanin told him.

Some time later they come with plan to fool an enemy that had trailing them but Sakura standing up while Kabuto and Sasuke were couch down behind the bushes was ruining it.

"Sakura get down already they are almost here" Sasuke told her.

"I am trying Sasuke-kun but my body is really stiff making hard to do so" Sakura told him as finally managed to get down before they arrived and Naruto with two disguised shadow clones fought them all night long.

After the enemy had left and Team Seven obtain the last scroll they needed it was time to head to the tower at the center of the Forest of Death but Sakura was still couch down in the bushes have never popped along with Sasuke and Kabuto after the trap was sprung.

"Hey Sakura-chan come on it time to go. Saaaakkkkuuurrraaa-ccchhhaaannn" Naruto said waving his hand in front of her face which did not respond at first but after about half a minute she pushed Naruto away from her and after another minute managed to stand up following after her teammate and Kabuto.

'Interesting as it seem to slow reaction time but it surely working maybe her charka control is somehow messing with the jutsu completion as other then her brain the only thing going for her is her chakra control which superior to Sasuke's and Naruto's' Kabuto thought.