The Girl in Twilight, known in Japan as Akanesasu Shōjo (Japanese: あかねさす少女, transl. "Girl Glowing Red"), is a multimedia franchise celebrating the 20th anniversary of the Animax channel. An anime television series ran from October 1 to December 17, 2018. The project also includes a free-to-play mobile game. Animax announced the project on March 22, 2018, as a celebration of the channel's 20th anniversary. The anime television series is directed by Jin Tamamura and Yūichi Abe and written by Shogo Yasukawa, based on a concept by Kotaro Uchikoshi. Hiroshi Yamamoto is credited for writing the series' "SF setting". The series is animated by Dandelion Animation Studio and Jūmonji. Character designs are provided by Masakazu Katsura and Hiroyuki Asada, who also serves as the series' concept artist. Hiroki Harada is adapting the character designs for animation. Akitomo Yamamoto, Koji Watanabe, and Yuki Kawashima are serving as sub-character designers, with Yamamoto also serving as chief animation director. Susumu Imaishi, Koji Watanabe, and Sayaka Takase are providing prop designs for the series, and Ryō Hirata and Yasuhiro Moriki also provided designs. Yusa Itō is serving as art director at Kusanagi, while Haruko Nobori is the color key artist, Stanislas Brunet produces the imageboard art, and Akihiro Hirasawa is in charge of art setting. Atsushi Satou is serving as the director of photography at Studio Shamrock. Hideaki Takeda produces the series' 3DCG, and Hiroto Morishita is serving as sound director. The series is edited by Mai Hasegawa.