Nanami Kinoa is entering her senior year of Higschool. That means this will be her third year in an unrequited love with her Sensei and Bass coach Takahiro Yamada.  Since they first met they have been close and sometimes Nanami even believes that he feels the same for her, but he is so quiet and aloof its hard to tell. So this year she has vowed that on the day of her graduation ceremony she will confess to him. However Yamada Sensei may have other plans.