Does detective Conan exist

Answer 1

Yes, but not in reality, the series does. Neither does the town the characters live in, Beika City. Beika City was named after Baker Street, the street Sherlock Holmes lived on (and Shinichi/Jimmy loves Sherlock Holmes!) Although, there is a city called Daiei Japan, where they are so proud of Detective Conan (this is Aoyama Gosho's birth town), they have a museum, a bridge, multiple statues, and more dedicated to Detective Conan. They even have government papers from that town with Conan on them!