You're a secret agent, recruited in an organisation even though you're still a student due to your talents. You've received a new mission to infiltrate a school to investigate and arrest whoever is involved in an illegal drug case.

You're now standing in front of your new class, introducing yourself.

You scanned every student carefully, your eyes landed on a dark-haired boy sitting near the window, invested in his crime-solving novel. His schoolbag has a Detective Conan keychain hanging on the side. You noted to yourself he may be useful in the future...Maybe. Just maybe. He likes solving mysteries and notices something off that could help.....?