Sensei, Would You Sit Beside Me?

Sinopsis

Sawako works as a manga writer. Her husband of five years, Toshio is also a manga writer. On a summer day, Sawako begins to write her new manga. The story for her new manga deals with adultery. The manga describes Toshio having an affair with her editor and Sawako having an affair with her driving instructor. Toshio reads Sawako's manga with fear and jealousy. (Source: AsianWiki)