Saki is in her last year in university. She is 21 years old, born on January 6, 1989. After her parents died she lived with her elder married sister, brother-in-law and niece. She visits New York City as part of her graduation trip with her friends and after visiting Washington D.C. alone, she meets Takizawa Akira who helps her out when is questioned by the police for suspicious behavior. She gives the completely nude Akira her coat, scarf and hat. After noticing that she left her passport in the coat, she chases after Akira and then they decide to go back together to Tokyo, Japan.
She plans later on working in a company under the recommendation of her brother-in-law because she is ashamed of living off their money. She could only go to college with the aid of her sister and her brother in law. Saki also harbors a long-time crush on her sister’s husband, and especially wants to leave their house since she cannot bear being around him.
Most of Saki’s friends are NEETs who developed the Eden system that they plan to launch and bring themselves out of unemployment. Her only friend with a job, Ohsugi, has had a deep and long-lasting crush on her that she does not return; whether she is actually oblivious to his feelings or simply pretending not to notice as to not hurt his feelings is unclear.
She starts developing a deeper connection with Akira as her fascination with the enigmatic stranger grows every time she meets him.