Umi Sonoda has been with Kotori Minami for pretty much her whole life. They've been friends ever since kindergarten-- longer than Umi could remember. But recently, things have been a bit different between the two. Instead of laughing or joking with Kotori, Umi becomes flustered at the other girl's presence. Everything about her is just so... Perfect. Oh, but of course it can't be love. There's just no way. They're childhood friends-- aren't they?