This is likely the "hot" series you are referring to, as it is an adult-oriented Hindi drama. Review Summary : It holds a 7.2/10 rating on IMDb
Follows the life of a tomboyish girl named Bokul and her relationship with Rishi. Cast: Starring Sushmita Dey and Saheb Bhattacharya . kotha hot web series link
Because "Kotha" is a popular title, there are three distinct productions that currently dominate the lifestyle and entertainment discussions: 1. Kothha (Bengali Romantic Drama) This is likely the "hot" series you are