"Because you are my one and only precious and beloved best friend" After being suddenly dumped by her boyfriend of two years, Takara unexpectedly reunites with her middle school classmate, Emma, at the real estate company where she works. Although she is taken aback by the changes in Emma's appearance, she is happy to see her old friend again. However, in a fleeting moment, she recalls something…!? On this day, at the age of 33, something begins to stir──.