It wan in the episode of Only You. A king introduced himself to Sango (because she forgot who he was). His name was Kuranoske. He said when they were younger, he would stare at Sango in astonishment when she was defeating demons. Well, while he and Sango were talking, Kagome caught Miroku staring at Sango. Later on, Miroku saves Sango! At the end of the episode, Sango shasres an umbrella with Miroku. As you all know, Miroku touches her butt, and she slaps him. They end up sminling.
Submitted by inuyasharox