A Companion of Sorts

[Child!AU, Sakumo never died!AU, Kakashi/Gai friendship, for Sam] :: They didn't get along. Bickering, fighting, Gai was smiling even when Kakashi threw insults at him like the kunai he spent every morning throwing, they were friends. Rivals. Companions. The lines were blurred in their quick tempers and unlikely bond over doing their best. "Yosh! Who are you?"