Living with my parents, my father has been drinking heavily since he was laid off. My mother, however, continues to take care of him. Seeing this, my wife often says to me, "you won't leave him, will you?" But she also rejects our nightly activities and goes to sleep early. One day, unable to sleep, I accidentally witness my parents having sex. My father, who easily finishes inside my mother, goes out drinking late at night. Afterwards, my mother starts comforting herself without saying a word.