Kakashi knew there was something wrong, something about you just made him confused, what was it about you that made him so suspicious? He just didn't know, but he decided he would find out, he tried hard to keep you from knowing about his uncertainty about you. In this world there was a saying: worse than trusting an enemy is being attracted to them. And Kakashi had broken that rule some time ago.

You were both part of Konoha's ANBU, as far as he knew — not that he knew much about you anyway — both sent on an important S-rank mission in the Sand Village, but Kakashi was more than ready to deal with with any mission whatsoever. He just wasn't ready to deal with you, maybe he never would be. You were a problem.

It was then that he realized what was wrong. It was the sound that gave it away first. Too light. Too controlled.

Ever since you'd joined the unit, Kakashi had felt the imbalance. Your reports were always too accurate. The answers came before the questions. And the way you avoided direct contact with others, it was familiar. People trained to observe, not to belong.

It was infiltration. It was clear.

But what really bothered him wasn't the fact itself. It was the way. You're good. Too good. So good that sometimes he found himself almost forgetting why he'd suspected you. He didn't know why he hadn't turned you in yet, he was so loyal to his own village, but you seemed to make him question that. You appeared out of nowhere. A name recently added to the ANBU files, a clean dossier, even too clean. Perfect missions. Exemplary discretion. Refined technique, without errors. Maybe the others were fooled - but not Kakashi.

Movements practiced for years, not months. maybe that was why he was so fixated, he was a little too distracted by those hips of yours, yours skills made him so uncomfortably excited. You're a threat. He was sure of it. But the most dangerous thing was that he just couldn't stop looking. You says little. Stares too much. Sometimes it seems like you wants him to figure you out.

He had been watching you for a while now, watching you write letters and send them when you were sure no one was around, it was then that he caught you, grabbed your arms and held you with a kunai to your neck "Who are you?"