On the first day of class a young teacher enters an unruly room and begins his first lecture. To gain the students’ attention he relates the story of what probably led him into a life of mathematics. Told via flashbacks, the young teacher goes back to a time, probably 20 years earlier, when his mother was hired to look after a professor who suffered brain damage in an auto accident. The brain damage didn’t harm the personality of the man but limited his short- term memory to 80 minutes. The accident occurred 10 years earlier, in about 1975, up to that point the professor has a clear memory of events. —Asianmediawiki
Takashi Koizumi (小泉堯史 Koizumi Takashi) (November 6, 1944, Mito) is a Japanese film director.
After graduation from Waseda University, Koizumi started to work as an assistant director of Akira Kurosawa for 28 years. His directorial debut Ame Agaru is based on the script written by late Kurosawa, and won many awards. His other three features have all achieved great success across Japan. —Shanghai International Film Festival