Soft Skin.

Minako, a Tokyo housewife, is depressed that everyone has an active life outside the home except her. Taking her inspiration from TV reports of a hitch-hiking chainsaw murderer, Minako decides to spice up her life by finding a young lover and running off with him by faking her kidnapping. While her family frets and worries, Minako has a wonderful time. Eventually, though, she decides it's time to go back to her family. Her lover, however, isn't ready for the fun to end, and Minako's fake kidnapping soon becomes all too real.