Yaen?

Yaen? ( transl. Why?) is a 1970 Indian Tamil-language film directed by T. R. Ramanna and written by Subbu Arumugam. It is based on Muthukinnam, a novel written by Krishna and serialised in Kumudam. The film stars A. V. M. Rajan, Ravichandran, Lakshmi and Vennira Aadai Nirmala. It was released on 14 January 1970 and emerged a success.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.