Development In 2016,
Vignesh Shivan announced that
Vijay Sethupathi would play the lead role in his next film, titled
Kaathuvaakula Rendu Kaadhal; it would mark their second collaboration after
Naanum Rowdy Dhaan (2015). Produced by
A. M. Rathnam, the film was supposed to go into production in August 2016, but failed to materialise; Sethupathi moved on to act in
Kavan (2017) and Vignesh decided to direct
Thaanaa Serndha Koottam (2018). He also decided to direct a film produced by
Lyca Productions starring
Sivakarthikeyan. After this film was shelved, on 14 February 2020 (
Valentine's Day), Vignesh officially re-announced
Kaathuvaakula Rendu Kaadhal with Sethupathi still attached. He produced the film under his own banner,
Rowdy Pictures, along with Lalit Kumar of
Seven Screen Studio. Vijay Kartik Kannan and
S. R. Kathir served as cinematographers. The film marked the debut of Shweta Sabu Cyril (daughter of art director
Sabu Cyril), who joined the film's team as the production designer.
Casting In February 2020
Nayanthara and
Samantha Ruth Prabhu were announced as the lead actresses. Sethupathi and Nayanthara earlier acted in
Naanum Rowdy Dhaan and
Imaikkaa Nodigal (2018), where Sethupathi appeared in a cameo role, and Sethupathi reunited with Samantha after
Super Deluxe (2019). He had been cast after the makers approached the Down Syndrome Association of Tamil Nadu. In December 2021, former Indian cricketer
S. Sreesanth was announced to be making his acting debut in Tamil with this film. It was announced in December 2021 that dance choreographer
Kala Master would make her acting debut with the film, as part of the supporting cast.
Filming Principal photography was supposed to start in April 2020 but was delayed due to the
COVID-19 lockdown in India. That May, the production house announced that filming would begin that August. On 10 December 2020, the film officially began production in
Chennai. The film continued production through January 2021, and on 10 February 2021, Vignesh announced that the shooting of the second schedule had ended. By August 2021, shooting was happening in
Pondicherry. In late August 2021, a video from the shooting spot surfaced into the internet. It had the lead actors recreating the song "Valai Osai" from
Sathyaa (1988), and also wearing similar costumes. In early December 2021, the makers began post-production activities for the film, including dubbing works. On 9 December, Vignesh kickstarted the final shooting schedule in
Mysore. Principal photography
wrapped on 30 March 2022. The film was edited by
A. Sreekar Prasad. == Music ==