Theme song is "Stay Gold" by BTS.
"Helical Labyrinth" was originally scheduled to air from April, 2020, but the Covid-19 outbreak caused filming to be postponed. Filming for the drama series resumed June, 2021.
Based on manga series "Rasen no Meikyu: Idenshi Sosa" by Midori Natsu and illustrated by Hiroyuki Kikuta (published from May, 2012 to September, 2015 in magazine Big Comic Zokango).