Hana and Alice are inseparable friends until Miyamoto, a cute boy they spot at a train station, comes between them.
Tricking Miyamoto into believing that he is suffering from amnesia, Hana claims that she is his girlfriend. A baffled Miyamoto struggles to regain his memories as he is drawn to the prettier Alice.
When the bond deepens, the girls' lifelong relationship begins to fray... propelling them apart.