It’s Just That Any One of Us Is Half Without Another One Is You – Chapter Six
In which Seven is back together only to split up again when Sakura volunteers to go undercover with Orochimaru.
Sakura closed her eyes and reached for the place she kept the things she didn’t let out. Anger, mostly, the part of her that wanted to crush things into nothing or rip them into shreds. She thought about all the passing flashes of resentment, when Naruto and Sasuke both got extra training and she didn’t; when Sasuke executed the techniques her research turned up, the ones she just didn’t have the chakra capacity to perform; when Naruto effortlessly made Sasuke respond to him; when people murmured about the success record of their team and never once mentioned her; when her parents cheerfully assumed that she was doing filing for the Intelligence center, and she was forbidden to correct them.
She unlocked the cave she kept all that in, all the curses and spitting rage and pure, unadorned selfishness, and she opened her eyes and looked at the world through spite.