SEE ALSO: NewJeans' parents were reportedly the first to raise concerns over ILLIT copying the group

Leads Lee Hyun Woo and Red Velvet's Joy can be seen having fun with bubbles for their main poster, sitting down for brief interviews about their characters. Joy also mentions that it's too early to comment on her first acting experience, and that she's relying on the director for exclusive directions. 

Lee Jung Jin, Lee Seo Won, and Hong Seo Young also make appearances for the group poster, giving off a fun and lively energy. Check out the making film above while you wait for 'The Liar and His Lover' to premiere on March 20!