Toshigoro (1968)

Yoko is a high school student whose older brother Daisuke has an attractive and sexy girlfriend. The flaunting girlfriend catches the eye of a pilot at the airport when she, her boyfriend and Yoko are there to pick up an older sibling. Angry at the pilot's pass, Yoko who believes in true love and its ideals, visits the pilot's apartment to berate the man, but instead ends up falling in love herself.