Naruto recalled one particular taijutsu contest two years back where Sasuke didn't win for once. Koan did, of all people. That had to be the only time he had ever seen Sasuke look shocked. Koan had blown through the competition with little to no difficulty, Sasuke being the only one who could give him a little tough time. The fight lasted a few minutes, but in the end, Koan was victorious and Sasuke was unconscious, practically beaten into the ground. He couldn't remember another time that the Uchiha had seemed so completely shaken by that. But what made that one particular thing stand out was that it was the only time Koan had ever fought in one of the taijutsu contests the Academy held for its classes once a year. All the other times he hadn't even shown up to class on those days.