Confession of a Woman - Reiko (1970)

Four men and four women gathered at the after-party of a class reunion were talking about Reiko, who had not been in touch with anyone since graduation. Sano, who is single, said that when he went to Kumamoto on a business trip, a prostitute he played with looked exactly like Reiko. While Sano was half-convinced, he suddenly received a call from Reiko saying that she would join the after-party....