The upcoming anime adaptation of Hiro Oda's light novel series, Yowaki MAX Reijō nanoni, Ratsuwan Konyakusha-sama no Kake ni Notte Shimatta, has revealed its October debut date and additional cast members. The show's first promotional video, main staff, and more cast members have also been unveiled. The additional cast includes Rina Hidaka as Caroline Ramsey, Sora Amamiya as Erin White, Haruki Ishiya as Henry Cox, and Nobuaki Nakanishi. The show is directed by Jumondo's Nobuaki Nakanishi, with Hiroko Fukuda overseeing the series scripts, and Moe Hyūga and Natsuki Hamada composing the music at Kadokawa. Other staff members include Hyun Sik Choi as character designer, Shiori Shirosaki as prop designer, Shunsuke Sakai as background art director, Kazuhiro Arai as art director, Hitomi Fujii as color design, Kunihito Noritomo as compositing director of photography, Yūsuke Ueno as editing, and Jin Aketagawa as sound director. Miku Itō and Ryōta Ōsaka are reprising their roles as Pia Rockwell and Rufus Stan from the novels' voice drama and the manga adaptation's voice comic episodes. The romantic comedy centers on Pia, an ordinary grad student who gets reincarnated as a 10-year-old background villainess in an otome game. She remembers the game ends with her engagement with the prime minister's son Rufus Stan called off and her banishment from the land, so she asks Rufus to already break the engagement while they are young. But her request only piqued Rufus' interest in her more, and he makes a bet with her to see if he will really call of their engagement in seven years. The novel series launched on the Shōsetsuka ni Narō website in January 2020 and has nine chapters and ended with two epilogue chapters. Kadokawa started publishing the novels with illustration by Tsubasa.v in August 2020, and the seventh volume shipped in April 2024. A manga adaptation launched on Comic Walker as part of Kadokawa's Flos Comic website in 2021, and the manga's fifth compiled book volume was published on February 16. The overall project has 1.2 million copies in circulation.
