High schooler Eiyuu has a dilemma: His two childhood friends, Shio and Akari, have grown up to be almost too cute. Even though they don't seem to think much of it, he can't help but see them in a different light. If they ever realized how his feelings had changed, the embarrassment would be overwhelming. However, what Eiyuu doesn't know is that Shio and Akari might have feelings of their own.

When demon Akutsu Masatora successfully infiltrates a high school, he falls for an "ordinary" girl named Lily. However, there's more to Lily than meets the eye.