who acted as the heroine's parents in "kai vandha kalai" and what is the significance?

Pandian and seetha. This movie is the debut movie for Prithi, pandiarajan's son. Pandian and seetha were the leads in 'Aanpavam' Pandiarajan's debut.

N.B: Pandiarajan has appeared in a cameo in andha 7 naatkal but for all practical purposes, Aanpavam is his debut.