My wife has left... After graduating from college, getting a job, marrying, and buying a condominium, my dreams fell apart, leaving behind debt and loneliness. As I sat alone wondering how things had come to this, my wife's younger sister, Hikaru, came to visit. Spending time with her brought slight comfort, but then she suddenly presented me with divorce papers, plunging me back into the harsh reality of my situation. Amidst sweet, fleeting moments, the person who seemed to fill the void in my heart ends up forcing me to confront yet another painful dilemma.