The official website of the 9: Ruler's Crown television anime revealed additional staff, ending theme, and a promotional video on Tuesday. The anime adapting Palette's urban fantasy visual novel will air in July 2025.

Staff
Sub-character Design: Fumiya Uehara (Tasokare Hotel chief animation director)
Chief Animation Director: Saori Sakiguchi (number24), Minefumi Harada (Watashi no Yuri wa Oshigoto desu!), Miyako Nishida (Kekkon suru tte, Hontou desu ka), Fumiya Uehara
Costume Design: Haseko (Dosanko Gal wa Namara Menkoi prop design), Mari Eguchi (Shinmai Ossan Boukensha, Saikyou Party ni Shinu hodo Kitaerarete Muteki ni Naru. character design), Recommendation Inc.
Cuisine Design: Kyuuto Kitada (Hirogaru Sky! Precure key animation)
Art Design: Rie Onodera (Unnamed Memory Act.2)
Art Director: Youko Nakao (Hananoi-kun to Koi no Yamai), Mio Kawachi (Medalist background art)
Color Design: You Iwaida (Spy Kyoushitsu)
Director of Photography: Takahiro Washizu (Ranma ½ (2024) assistant director of photography)
Editing: Keisuke Yanagi (Jujutsu Kaisen)
Sound Director: Jin Aketagawa (Sakamoto Days)

Singer-songwriter Chihiro Yonekura (Fairy Tail, Kaleido Star) is performing the ending theme "Pale Blaze," previewed in the promotional video below.

Kouichi Oohata (Maken-Ki!) is directing the anime at animation studio 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.

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Source: Official site