The images in sepia color represent flashbacks,Sasuke's or Sakura's memories.
Story of the video:Sasuke and Sakura met when they were children and liked eachother, but they met in a bad time 'cause Itachi killed the Uchiha clan and destroyed Sasuke's life and the only thing he could think of was in revenge and left Sakura behind like the only good thing that happened to him in the past. When they meet again, Sasuke was cold to her and didn't paid many attention to her, until they became teammates. Their feelings for eachother grew and grew everytime they had a moment. When Itachi returned to the village, Sasuke confronted him but he got beat up 'cause he didn't had too much hatred in his heart, so he decides to leave Sakura and Konoha to search for power. Since he left, he started to miss her and thought that he was stupid to left her with Naruto there(maybe that's one of the reason why he fought Naruto XD)But he stills continues his quest and won't return until he kills Itachi. Sakura, can't live without Sasuke and she also leaves Konoha to look for him.
I hope you guys like it.
THIS VIDEO IS PURELY FAN-MADE AND IT'S NOT RELATED TO THE ANIME COMPANY OR THE MUSICAL ARTIST IN ANYWAY. This was made for fun