At Second Glance

Sakura opens her door one morning to find an injured Kakashi staring back at her. After taking him in and healing him, she realises that this is not her Kakashi-sensei but his younger self, traveling from the past. Inappropriate flirting ensues, and Sakura discovers that there's more to her sensei than she ever thought. KakaSaku. Rated M for language and sexual and violence themes.