You were supposed to meet Kakashi and others at the sweet shop for some tea, but you got a message from Lee that all of them were headed towards the bridge, so you went there. But what you saw was something. You prayed that never happened. You saw Itachi. You still didn't know how you felt about what he did, so you always avoided the topic even if Kakashi tried to talk about it. But here he was, you didn't know how to act, but when you saw Kakashi under Itachi's Genjutsu, it was as if your legs moved on their own. You attacked Itachi, but obviously, he knew about you already, so he defended, didn't attack, just defended.