Vacation!

It was noon when I was finally back in front of Ran's father's detective agency. I had to listen to the multiplication tables and the ABCs for a full six hours. Ai had kind of fun but I didn't find it funny at all.
When I rang the doorbell, it was Ran who opened the door for me. Nanu? Didn't she have eight hours of class today? ,, Hello Conan! You are amazed, what?