'Miku' is a responsible person but has a tendency to fantasize, while 'Kanna' is naturally clumsy but can be surprisingly capable when she puts her mind to it. The two have been best friends since elementary school. They enroll in the same ● school, but Miku feels jealous of Kanna's ability to get along with new classmates... "Hey, we've always been friends, right? We're special to each other, aren't we? Shouldn't we have a secret signal just for us?" The answer they came up with was 'kissing'. Friendship gradually turns into love... Their relationship escalates intensely and becomes explicitly sexual.
