Dear Stranger (1970)

Bintang (17), Zalika (17), and Surya, have been friends since childhood. Their friendship started when Zalika moved to the house next door to Bintang and Surya, who are brother and sister. One day, an incident made Zalika lose and forget Bintang. Bintang, who had harbored feelings for Zalika for a long time, did various ways to make Zalika remember him again. However, unexpectedly, all of Bintang's efforts ended in a reality he didn't expect.