The official website of the television anime adapting Palette's 9 visual novel revealed the main cast, staff, and a key visual (pictured) on Sunday. The anime, titled 9: Ruler's Crown, will premiere in 2025.

Cast
Kakeru Nimii: Atsushi Abe (Princess Connect! Re:Dive)
Miyako Kujou: Misato Fukuen (Boku no Hero Academia 2nd Season)
Sora Nimii: Atsumi Tanezaki (Sousou no Frieren)
Haruka Kousaka: Yuri Yamaoka (Kyoukai no Kanata)
Noa Yuuki: Akane Fujita (Eromanga-sensei)
Yoichi Fukuzawa: Kazutomi Yamamoto (Dance with Devils)
Renya Takamine: Tomokazu Sugita (Suzumiya Haruhi no Yuuutsu)
Satsuki Naruse: Hana Takeda (Naruto: Shippuuden)
Sophitia: Satomi Arai (Toaru Majutsu no Index)

Kouichi Oohata (Maken-Ki!) is directing the anime at PRA. Saori Sakiguchi (number24) is credited as the character designer.

Developed and published by Palette, the first game of the romance visual novel series was released on Windows in April 2018. The fourth game was released in April 2020, and a sequel featuring short stories was released in the following April. Sekai Project has been releasing the game on Steam since February 2019 with English and Chinese versions. Palette released the complete game on the Nintendo Switch and PlayStation 4 in June 2022.

Izumi Kawachi began drawing a manga adaptation in Manga Gaugau in October 2021.

Source: Pash! Plus