Conan: Undercover in the Organization, Only to Find Everyone Else is Also an Undercover Agent

[Detective Conan fanfiction, no romantic pairings, original pairings not broken] With an innate keen sense of smell, Takashima Munenori embarks on the path to becoming a police officer to uncover the truth behind his parents' deaths. Little did he know that after helping the police solve his first case, he would earn the nickname "human police dog." [Will involve real cases, Kindaichi cases, and cases from Japanese dramas, etc.]