"Go with the Clouds North-by-Northwest is one of those stories that seems pretty simple on the surface, but the more you read on the more you realize you've only just begun to peel back the layers of its onion."
- RightStuf Anime

Kei Miyama returns to Japan and begins his search, believing that his younger brother Michitaka is still alive. To Kei, Michitaka has always been a spoiled but tender-hearted person. That's why he's refused to believe all the dark rumors surrounding his brother. But now, he's starting to realize he doesn't know Michitaka as well as he thinks...