fanfiction-naruto:Just the Usual Habits by Applepie

Sakumo has no idea where all of these habits of Kakashi's are coming from. In which five-year-old Kakashi forgets the existence of his left eye, loses his ability to lie believably, and is a little too knowledgeable about the Birds and Bees. Still, no matter what oddities went on in Kakashi's head, one thing is certain – the boy will always love his father, through thick and thin.