Has anyone else noticed the tree in the background? The leaves are all gone; the tree is dead. This can symbolize so many things. Sasuke has left the leaf village and the leaves have left. The tree has died and so has the old Sasuke. And if you look at the ground, it used to be grassy. Now it is cracked, dry earth. It is broken for both of them. They are broken without each other. But the one thing that has stayed the same is the clouds. There is still a constant in their life, and that constant is their bond.
Sake drinking dates back to the samurai period where common people used to drink sake in a Shinto ritual to form a bond with the deities. This was always done in a group where it is thought that this sharing of sake ritual united people and created a bond of friendship between them with God as the helper. (x)