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.

connect - vaanam vasapadum & pachhai kili muthucharam to the play 'love letters' by Evam.

Andrea and Karthik who made their respective debuts in the above two movies are the lead in the EVAM's play. They are a standard cast in EVAM's many other plays as well