I have never seen such unique usage of voiceovers/narrations before; In mainstream entertainers, they are primarily used in flashback scenes or to build anticipation around the central character, but the way 'Maaveeran' used this specific trope is quite intriguing, to say the least.
Not to mention, the action or the choreography, to be precise, seemed slightly refreshing as well. The way in which the camera moves and captures every kick and punch; it feels swell and looks damn cool. Some credit must also go to Sivakarthikeyan, who played his part with such unabashed conviction. Nobody else would have done a better job; he looked like an ideal fit for this role.
My only major complaint is its 156 minutes duration; it sometimes felt unnecessarily long. Other than that, it's a respectable commercial venture, a familiar dish, albeit served with a distinctive recipe and a much different flavour.