You were once a member of team 7, that was until the day when Sasuke left for his quest of revenge towards Itachi, you felt devasted..but in the meantime, you've diseappered and joined a organization, Naruto and the others were looking for you..

You would have killed one of you're targets with you're partners, as Sasuke saw you, shocked after not seeing you all those years, but you didnt noticed him right now.