The Kid Returns.

An AU where noe of the BO arcs happened (With the exception of the one off episodes with no progress like Tequila's death. And others changed such as the police confiscating Suguru Itakura's diary as evidence and Conan unable to get a hold of it) and only the filler cases or The Metropolitan Police Detective Love Story occured with Shinichi having never even met Akemi, Chianti, Korn, or even Haibara and as far as he knows Jodie is really just an English teacher. The first and last he saw of the organization was when he was shrunk making Shinichi loose hope and give up going to the US to live with his parents after having achieved no progress after 6 months. 8 Years later Shinichi/Conan returns to Japan after hearing rumors of the BO resurfacing but finds much has changed.