The film begins with a morning scene in an apartment, which one might expect to be a drama about a college student living with a man and a woman, but the style takes a turn when the man and the woman, who had left for school one step ahead of the others, suddenly return home by train. What lies behind, what has passed, passes by with an indifferent face. The author's method of daring to focus on the behind is not only to tell the story through the image of the protagonist, but also through the people in the image, or through the author's own image. It is told not only through the image of the protagonist, but also through the people in the image, or through the artist's own image.