, which was released in 2013 and saw a resurgence in interest among Sinhala-speaking audiences around 2021

Over ₹100 Crore (The first adult comedy in India to reach this milestone)

I'm assuming you're referring to the 2013 Indian film "Grand Masti" with Sinhala subtitles, and you're looking for a report on it. Here's what I found:

Grand Masti 2013 Sinhala Sub 2021 refers to the 2013 Bollywood sex comedy Grand Masti

The Sinhala subtitle for the movie was created by Sameera Chathuranga .

In the early 2010s, fans translated movies out of passion. By 2021, the art of the "Sinhala Sub" had evolved. The file circulating in 2021 wasn't just a direct translation; it was a localization.