I will become Amika with Aria-senpai! Mamiya Akari is a first-year student at the Tokyou Mujou High School, aiming to become a licensed detective known as 'Mujou' to solve cases. Inspired by the top S-rank Mujou, Kanzaki H. Aria, Akari applies for the special training system 'Amika' for upperclassmen and underclassmen pairs, challenging Aria for the right to become an Amika! Can Akari, who is currently the lowest rank E-rank Mujou, really succeed?!