されど罪人は竜と踊る 15: 瑠璃色の放物線 (ガガガ文庫 あ 2-16)

[DeepL Translation - needs review] Volume 1: That Big Series Goes to GAGAGA Bunko! The popular "Sare Ryu" series from "Yoroshiku" is now available in its entirety in the GAGAGA Bunko collection! The author himself says, "This is the complete version! A completely original new long story is also prepared for publication! This is the complete version! This work contains color illustrations and black-and-white illustrations of the same quality as the original.

(Translator: DeepL)