Day 05: Sad moments

Hmmm... There are a lot of sad moments of Naruto and a lot of sad moments involving Sasuke, but very rarely involving them both. But if I were to choose, I'd probably go with the end of the battle at The Valley of The End. Why is it sad? I can't really explain, but I definitely think it's sad.... Look at the way that Sasuke looked at Naruto before finally leaving...