We had earlier reported that Sivakarthikeyan is teaming up with director Rajkumar Periyasamy for his next, which is backed by Raajkamal Films International. The film is tentatively titled SK21. Amidst speculations that the shooting for the film has begun this month, actor Sivakarthikeyan took to Twitter to share photos with the director. 

He captioned the photos, "A wise man once said: Make friends who force you to level up." Sivakarthikeyan and Rajkumar are seen in deep discussion in the two photos that the actor has shared on Twitter. 

While we know that the film stars Sai Pallavi as the female lead, the other cast and crew details are yet to be revealed. Recently, Kamal Haasan's costume designer Amritha Ram was roped into the project. 

Meanwhile, Sivakarthikeyan is currently filming for Madonne Ashwin's directorial, Maaveeran. He stars alongside Aditi Shankar in the film. His film Ayalaan directed by R Ravikumar is yet to hit theatres. On the other hand, directed Rajkumar Periyasamy is known for helming Rangoon, starring Gautham Karthik.