Shikamaru, Naruto and Sasuke. I love how they're doing peace signs above their heads lol. My friends used to do it when we were kids and we thought it was funny so we made it a tradition (but it died off a year later).
Naruto - Team 7 God why. In the scene when he took a last look at the picture, I always imagined he was thinking back on the memories... and recently in the manga he admitted team 7 became his family <3 :)