Renren no Ki(1991)

Renren no Ki

Benie lived a comfortable but restrictive life as the wife of the company president. She was often troubled by an unbearable sense of loneliness. One day, when Tetsuro Ike came by the house on company business, a casual gesture made Benie feel the intense provocation of a younger man...! An unforgivable love, made more beautiful by the feeling of chaos.

(Source: Futabasha, translated)