The secret behind the huge success of the film MungaruMale

What is the secret behind the huge success of the film MungaruMale?
Is it because of songs? or ganesh acting? or direction? or camera work? or lyrics? or Music?
The answer is yes for every thing, but also one top secret is there, i.e the rain, yeah, because when you entered the theatre it sets your mind to little bit moody and additionaly the songs are superb which increases that moody environment from starting to the end of the film .This moody environment creates full of emotional feelings in our mind which makes everyone to watch the movie again and again. So the best character of the film is "Mungaaru Male" the rain, So the title is also perfect when we see from this point of view.