According to Mitsurô Kubo, the appearance of Viktor Nikiforov is based on actor and director John Cameron Mitchell.
Mitsurô Kubo and director Sayo Yamamoto spent 4 years planning for and creating the basis of the show.
This show used more key animators than any other anime series during the fall 2016 season: an average of 48.5 key animators per episode, five more than Flip Flappers (2016), which had the second-highest number of key animators.