Kurokiya Ruu is on the verge of repeating a year, and in an attempt to fix her grades, her teachers get a top student to tutor her: Tadashi Tadao (name literally translates to straight-forward man), who happens to be her childhood friend who she hasn't seen since they went to different middle schools.

However, they end up not getting any studying done as she uses this situation to try and seduce him at every turn.

This is the story of a girl who wants to get her crush flustered and lead him around by his nose, and a straight-forward guy who won't get embarrassed.