Mookuthi Amman

R J Balaji initially wanted an established actress like Anushka Shetty or Nayanthara to portray the title character, but did not approach them. He then narrated the story to Shruti Haasan, who liked it and said she would do the role. However, when Nayanthara called Balaji and liked the story he narrated to her, she agreed and was signed on.

When the lead characters travel by bus, some persons standing inside can be seen. These people would not have let an invisible entity occupy a vacant seat.