The 'Retro BTS Comic' is a promotional comic series which gives us a glimpse into the making of actor Suriya, and director Karthik Subbaraj's May 1, 2025 release, Retro. Episode 4 of the Retro BTS Comic dropped on March 3, 2025. It reveals what went into the making of the Retro first single Kannadi Poove, a song composed by Santhosh Narayanan, and choregraphed by Sherif master. 

Details of Retro BTS Comic episode 4 as officially revealed on X:

"The jail set for Retro was originally planned in places like Shimoga Jail, the CSI Building in Thiruvallur, Tuticorin, and Cochin. But director Karthik Subbaraj had a smarter idea. He decided to create a full retro-style jail inside the Chennai BSNL office.

The art team put in incredible effort. Around 40% of the building was already in ruins, and the rest was transformed into a warden’s office, prison cells, a library, a kitchen, and even a visitors’ area. The entrance arch made it look even more real.

When Suriya sir walked in, he was shocked. He had been to the BSNL office many times before, but he couldn’t believe his eyes. “I’ve been coming here for years. How did you bring the Madurai jail here? Super ya, Karthi!” he said. Karthik, as always, gave full credit to the art team.

The shoot started with two fight sequences, followed by other action scenes. Once they wrapped up, They shot Kannadi Poove.

Suriya sir shared his feelings telling “For five days, I felt like I was living inside a real jail. I experienced every moment, every emotion… and danced it all out.”

And that’s how Kannadi Poove from Retro came to life."