Song Kang had learned ballet for 6 months prior to the filming. He mentioned that he focused on the lines and details more than high-level or professional skills. The actor also constantly monitored videos to be able to do natural ballet scenes and he practiced his facial expressions too.
Based on webcomic "Nabillera" written by Hun and illustrated by Ji-Min (published from July 26, 2016 to October 31, 2017 via Daum Webtoon Corp.).
"Navillera" takes over tvN's Monday & Tuesday 21:00 time slot previously occupied by "L.U.C.A.: The Beginning" and followed by "Doom at Your Service" on May 10, 2021.