Today, he doesn't just stand and watch. He walks up to the tree, stands under it. Wonders briefly, manically, about climbing it.
He realizes he might not be sane anymore.
He's ceased caring.
Probably, it was years ago. Maybe 1999. Maybe earlier. Maybe when his mother told him people died for him. He was a child.
But none of that matters anymore, nor ever will again. Because Kamui lost the final battle, and isn't really here.
People wonder at the man crying under the sakura tree. But he's just some bum who lost his sanity with the last millennium.
Inconsequential.