The Age of Our Own(1959)

Minami Yasuo, a college student, lives with Yuriko who has become the mistress of a foreigner named Wilson. Whenever Wilson comes, Yasuo spends his time in the tea-shop "La Gana." Yasuo is asked by his brother Shigeru to teach French to Akiko, a young girl who is studying French songs. Yasuo then learns that he is the winner of an essay contest and will be offered a scholarship to study in France. Akiko, is now pregnant and Yasuo promises to break with Yuriko.