The official website for 9-nine- Ruler's Crown , the upcoming TV anime adaptation of Palette's four-part visual novel series 9-nine- , has posted a first trailer, which announced the anime's July 2025 premiere in Japan. 9-nine- Ruler's Crown 1st Trailer The clip also introduced the anime's ending theme song "Pale Blaze" sung by Chihiro Yonekura, who previously provided all of the opening and ending theme songs for the original game series. "The Ed theme song 'Pale Blaze' was written by Tako Yamaguchi-san, and composed and arranged by Shota Horie-san, a super tag team familiar to '9-nine-,'” said Yonekura. "Even at the demo version stage, I was so captivated by the dynamic development of the song that I was in tears by the time I finished listening to it. I sang this song passionately to capture that emotion. Please look forward to the new masterpiece 'Pale Blaze' along with the anime's broadcast!