Narutos First Friendship! Shikamaru and Choji Are the BEST!!
Aside from Hinata, who was the first one that befriended Naruto, even before Iruka did according to The Last: Naruto the Movie; Shikamaru and then Choji are peers who have a close relationship with the blonde troublemaker. Furthermore, it was Kiba who started to mingle with them due to their mischievousness.