Hitomi no Naka no Satsui: Kekkon Shitai Onna (1981)

Hitomi no Naka no Satsui: Kekkon Shitai Onna 1981 / 瞳の中の殺意　結婚したい女 1981 / Murderous Intent in the Eyes A Woman Who Wants to Marry

Ryoko is a bank employee, who works at a bank in a provincial city. But she's not happy in life, not blessed with love from her family, until she founds a lover. His name is Tohru, a scion of a paper manufacturing company who is also a business partner of the bank. However, due to differences in family backgrounds, Tohru's parents refuse to allow them to marry. At the same time Ryoko is unexpectedly extorted by Kosuke, an investigator at a detective agency. Ryoko, who has a strong desire to marry Tohru, concocts a perfect crime plan to remove the obstacle. (Source: Japanese = loveantlers.blog31.fc2.com || Translation = XuongPhim) ~~ Adapted from the work by Ishizawa Eitaro (石沢英太郎).