The Dark History of the Reincarnated Villainess Trailer
The Dark History of the Reincarnated Villainess First Visual

The Dark History of the Reincarnated Villainess‘ confirmed cast is as follows:
Iana voiced by Yoshino Aoyama (Hitori in BOCCHI THE ROCK!)
Konoha voiced by M.A.O (Pecorine in Princess Connect! Re:Dive)
Sol voiced by Shohei Komatsu (August in Wise Man’s Grandchild)
Ginoford voiced by Makoto Furukawa (Benimaru in That Time I Got Reincarnated as a Slime)
Based on the manga by Akiharu Toka, Hiroaki Sakurai (The Demon Girl Next Door) directs The Dark History of the Reincarnated Villainess at Studio DEEN, with series composition by Mitsutaka Hirota (Possibly the Greatest Alchemist of All Time), character designs by Tomoyo Sawada and music by Ryuichi Takada (Shangri-La Frontier).
Yen Press publishes an official English version of the manga and describes the story:
Konoha Satou has a dark history. After all, she spent her teen years writing self-indulgent fantasy romance fics-like her Dark History. But since she’s become its most despicable villainess, remembering every last detail is now a matter of life-and-death. Having avoided the first couple of death flags, Satou’s suddenly left in the dark when a mysterious stranger returns from the Lily Kingdom-a character she doesn’t recall writing in the original script. Although Yomi claims to be her ally, can Satou really trust a character she knows nothing about in such a dangerous world?
Source: Comic Natalie