Saki Sasaki, a 20 years old collage student is a nerd who likes to read whenever she had a free time. Saki love knowledge and would spend the whole in the library just to know something. Saki sometimes get along with people but she mostly would be in the library. Which mean, if she interested in something, she would spend hours just to know and learn about it. She is somehow feeling guilty of rejecting the confession of a certain man and bearing those guilt to this day.