Joined together in a spiritual sense (literally?). Very nice, beautiful in a philosophical way. Sacrificing yourself and giving to another, it's a powerful message. Unfortunately, I got stuck partway through (you're on a branch, and there's a spirit below you with thorns between. There's only a drop onto more thorns) - so I wasn't able to reach the conclusion. Or maybe the conclusion is that sacrifice is meaningless in the end?
I liked it. It's a very basic platformer, but the difficulty curve is decent.