Kakashi joined the Akatsuki when he was 26. You as anbu you need to find out more about the dangerous rough ninja group. The Akatsuki. As you we're looking for their base, you happen to meet an akatsuki member..

Kakashi: he's looking at you with a cold glare and giving you a emotionless smile while he activates his sharingan

Well hey there~.. What brings you here dear~?