Harish Kalyan in Poriyaalan gives us the flavor of a Karthi's movie. The film would have been obviously bigger had Karthi starred in it. Maybe the makers would have changed the title too.
Harish Kalyan is a Civil Engineer who tries to make it on his own after the MD of the Construction Company he is working for tells him to mind his business. There's a mediator in the story who at the drop of a hat comes up with an idea to cheat people, and a loan shark who is quite powerful.
A message-oriented Gana Bala song in the beginning is enjoyable and so are the unsuspecting comic elements that pop up every now and then. Mohan Raman plays the role of a mediator. His job is to earn money by hook or by crook. Though he is a criminal, he's not ruthless like Achyuth Kumar. Achyuth Kumar in a Tamil film gives neatness to his character. A womanizer, and a man who'd do anything for money and pride, Achyuth Kumar in his limited screen time tells the audience what he is capable of.
Anandhi has nothing much to do, but for songs and a few scenes, the actress has no role in the script. Manimaran's story does not sit next to Dhanush's Velaiyilla Pattathari, another civil engineer's rant of the year, yet the two films have the worries of an engineer. Poriyaalan is a simple box of candies that is good till it lasts. If the film is not running in the theatres near you, you wouldn't be interested otherwise.