I've been a fan of Gosho Aoyamas work (Detective Conan / Case Closed) for over 10 Years.
And since I got back to collecting autographs I thought it was worth a try.
I wrote an E-Mail to the publishing company yesterday evening (European time) and their unfortunately negative answer came back today morning.
Dear ****
Thank you for your recent inquiry regarding the publications of Shogakukan.
We are sorry to tell you that our company do not accept your inquiry.
In addition, there is no department in such cases.
So, we can give you no information about this matter.
Thank you for contacting with us.
But I won't give up and try another way, maybe through the company that publishes the movies
