Voice of Thiru) is a 2023 Indian Tamil-language psychological action thriller film written and directed by Harish Prabhu[1] and produced by Subaskaran under the banner of Lyca Productions.

Thiru, a person with speech and hearing disabilities who has a degree in civil engineering, works with his father Marimuthu, a building contractor.

One day, a sack of concrete accidentally fell down from a building, and Marimuthu was admitted to a government hospital.

Aarumugam tells Thiru to use the stairs to go to a higher floor, while Chithra and Bhavani use the elevator to take Marimuthu to his room.

Another day, Aarumugam and his colleagues try to steal money from a rich man, but Thiru beats them, and their plan is spoiled.

So Thiru takes his father on a wheelchair to him to the next block of the hospital and stands in a queue to get a signature, but the staff informs him that the card he has given is a food token.

[4] The cinematography was by cinematographer Sinto Poduthas, who has previously worked in the Malayalam film Ennivar.

The film's editing was handled by Ganesh Siva, who has previously worked on Arulnithi's D Block.

"[12] Logesh Balachandran of The Times of India gave the film a rating of 2.5/5 and wrote, "A little bit more detailing in the script would have definitely made it an intense thriller similar to Karthi's Naan Mahaan Alla.

"[13] Srinivasa Ramanujam of The Hindu wrote a review stating, "With predictable action fare, Arulnithi’s latest Tamil film doesn’t tap its sole interesting idea to the fullest.

"[16] Kalyani Pandiyan S of Hindustan Times stated that "unnecessary nail for the Tamil New Year.

"[17] Avinash Ramachandran of Cinema Express gave it 3 out of 5 stars and wrote, "all that Thiruvin Kural needed was a bit more focus, a little more ingenuity, and slightly more strength in its voice.