Adapted from the novel "Invert: Jozuka Hisui Toujoshu" (invert 城塚翡翠 倒叙集) by Aizawa Sako (相沢沙呼). 

Invert: Jozuka Hisui Toujoshu is the sequel of previous work Reibai Tantei Jozuka Hisui. This is the first time in the renzoku drama history where the same main character is featured in two separate dramas with different titles and posters.