Growing up in the same apartment complex, Yuuki and Natsuha have known each other forever. They've been friends for so long that everyone just assumes they're a couple! But as they both approach the final stretch of high school, they get a silly, totally-not-serious idea-- what if they actually star...

Growing up in the same apartment complex, Yuuki and Natsuha have known each other forever. They've been friends for so long that everyone just assumes they're a couple! But as they both approach the final stretch of high school, they get a silly, totally-not-serious idea-- what if they actually started dating? What a ridiculous thing to say! Unless...?