KM Sarjun's Airaa is about a supernatural story based on an abstract concept called " The Butterfly Effect" cleverly adapted to Tamil audience sensibilities..The director has tried to spin an mostly emotional tale with a supernatural backdrop.
Kollywood is not really known for horror themed movies. Although the horror elements are based on Japanese horror conventions like "The Ring" and "Ju-On" they are not overdone but they work as intensifying thriller elements for the emotional story.The film for the most part is an average ride. Although inspired by Asian Horror conventions , it it never chills the bone quite in the way Asian horror does. The first half offers a typical few jumps scares and investigative mystery thriller elements but these remain as fleeting moments to set the tone of the film.
The film moderately build up the suspense but does not really keeps one on the edge of their seat except for us to wonder what's going to happen next.until the second half. The acting performances for the most part are average and Nayanthara gives a decent performance with her expressions on screen . However the CGI isn't very much convincing or exceptionally well done relying on the typical motifs imagery and cliches usually seen in movies of this sort.
Overall an above average thriller that does not do anything in excess or falls short. Watchable if u have nothing else to watch...