A night alone with my father's woman

Three years after my mother passed away, my father always brings his mistress to his house every Friday night. I was troubled by the woman who was holding her body together without caring about my presence, and at the same time I started to secretly admire her. Then, one Friday, when a large typhoon hit directly, my father's woman came as usual, as she was hit by heavy rain that had been hit by side. The train stopped and my father couldn't get home from work, so he ended up spending the night alone with his father's wet woman...