In 2015, Nag Ashwin made a splash with his maiden directorial Yevade Subramanyam – about a man’s journey to the Himalayas to rediscover himself. Cut to three years later, he’s basking in the phenomenal success of his sophomore film, Mahanati, a biopic on legendary south Indian actress Savitri. That’s why I believe, no matter how much one plans, some films …