The film starts good has intrigue tries to flesh out characters but the intrigue begins way too early.
For the way the character's dialogues show no complexity their motives and behaviours are complex. The Dialogues though simple feel real like something you can hear or speak on a daily basis.
The screenplay for a complex and contrived plot need a hefty amount of shadowing. This causes the viewer to feel like a passenger on a derailed train. But not necessarily...
This is a good attempt and we need more attempts like this. To tell information without it being infodump or lecturing or having the characters behave as school kids or dumb fools is a rare thing in Tamil cinema. Some of it is reminiscent of dheeran adhikaram ondru minus the action of course.
The story is airtight. Because there isn't much happening. There are very few characters. There is very few marked events and the same characters talk back and forth interacting with each other. Nothing fancy or put of the ordinary has occured in the film.
It's just decent. And it doesn't deserve a 9.1 rating at all. Let's reserve that for groundbreakers and Mavericks and the rarest of the rare please.