[Detective Conan fanfiction + single heroine, Ai Haibara + assassination System + high intelligence + beating up Conan + lots of original worldbuilding]
After transmigrating to the world of Detective Conan, Miyagawa Yoshihiko unexpectedly receives an assassination list. As long as he completes one mission each week as instructed, he can use everything granted by the System for free.
Unlimited weapons and ammunition, unlimited gadgets, and even a specially enhanced body...
Miyagawa Yoshihiko doesn't think of himself as anyone special. But now that he's in this world, he may as well try to do something meaningful.
May Beika Town be cleansed of its darkness as its crimes are washed away...
