Kuriko Mai is a stein with an issue. She never remembers sex. Nor does she recall meeting the men she finds in her bed. Cursed with flawed programming, she's all but given up hope of having a normal life. However, after years of watching her suffer, her boss Frank can't stand it anymore, and he's determined to make her remember any way he can.
Frank has always loved Kuri. And when he finds himself in a heated embrace with her, he can't walk away -- even knowing she may not remember him in the morning. But when it's obvious Kuri recalls moments of the passion they shared, the two decide to become lovers in hopes Frank holds the key to ending her malfunctioning programming. Their plan backfires when their erotic experience opens a floodgate of memories so painful, Kuri breaks down.
In order to move forward, Kuri has to face her past. She just doesn't know if she can risk the pain loving Frank could cause.