Kill Blue anime staff announced that the series will receive a second season following the conclusion of the first season on Saturday. The first season premiered on April 11 on multiple Japanese television stations and began streaming the same day. The anime is produced by CUE, a studio founded by DMM in 2023, with Rui Kuroki serving as president and CEO. Director Hiro Kaburagi, who previously worked on Great Pretender, Hozuki's Coolheadedness, and My Little Monster, directed the first season. Miho Daidōji, an animation director for Kuroko's Basketball and Last Game, handled character design. The opening theme song "ATTITUDE" was performed by the South Korean girl group aespa, and the ending theme "KILL SHOT" was performed by the South Korean boy band RIIZE. The manga, written and illustrated by Tadatoshi Fujimaki, was serialized in Weekly Shonen Jump from April 2023 to September 2023 and concluded with its 13th volume released on December 4. Viz Media publishes the manga in English, having released the sixth volume in print on April 7 and planning to release the seventh volume on August 11. A novel adaptation titled Kill Blue Secret Report by Kiyoko Hoshi was also released on December 4. The second season has not yet been scheduled, and no release date has been announced.