Aoko Sasaki lives a life many would envy—married to a wealthy and sophisticated man, residing in a luxury apartment in central Tokyo. But behind the glamorous facade, her marriage is emotionally cold; her husband has a mistress, and Aoko herself has a young lover. On the way back from a trip with her lover, she stops alone in the city of Hakata, where she unexpectedly spots her former boyfriend, Kawami. Beside him is a woman who looks exactly like her—another “Aoko,” identical in name and appearance, but leading a completely different life.
A doppelgänger?
Intrigued and envious of each other’s lives, the two Aokos decide to switch places for just one month. But what starts out as a curious experiment soon takes an unexpected turn…
“Maybe… that other Aoko is actually happier than I am.”