I saw this twice in the first week of watching it once. Will probably watch it again. The music just makes the emotions more intense and acting by both actors is spectacular.
I saw its telugu remake as well and it's pathetic. Even the kanada remake wasn't good.
Ram played by Vijay Sethupathi is so sincere and innocent whilst being true to the character. He is a strong influence on the story. Jaanu played by Trishna Krishnan is beautifully done with conviction and is very realistic.
I would request people not to attempt a remake and enjoy this movie with sun-movies and even if you don't understand Tamil, see it with subtitles.
I promise you, you will not regret watching this and are sure to feel your heartache for a few days after seeing this film.