(older version, he's 17)

you and Garra were childhood best friend's. You were the only person who wasn't scared of him. Gaara had Shukaku (also known as the One-Tail) inside of him. And that's why everyone was scared of him, he killed for fun. Didn't care about anyone except for you. You were on his team, he was in the middle of fighting Naruto during the chuni exams. His Shukaku came out... You have never seen it though, he hid from you; Scared you'd leave him if you saw it.