Haibara states while Conan is watching the soccer game, "Kudo-kun I think you've never thought that you've been in a secret mission our organization started half a century ago. You were already heavily linked"................that's 50 YEARS! so what, do they somehow have connections with Kudou's grandfather because Yusaku is only about 40, so when and how did the organization become acquainted with the Kudo family. A theory of mine is what if Shinichi's grandfather is the boss?