imdb wrote:This movie is sequel of sorts to the original novel by Tsutsui Yasutaka, and the 1983 live-action movie - the main character's aunt is Yoshiyama Kazuko, the protagonist of the novel. The scenes featuring her in this movie are liberally sprinkled with references to the original novel and movie, including her description of a Sunday that was suddenly over before she knew it, and her former boyfriend who promised to return some day, to give a few examples.
The novel was written in 1965-66, so it's older than I am. A tv series based on the novel was made in 1972, and there is another movie (a remake of the 1983 film version) made in 1997.