As I mentioned on the other page, Shizuoka is famous for hobby stuff including plastic models. And there’s a hobby store right in front of JR Shizuoka station, called “Surugaya”. They carry all kinds of interesting stuff, like Manga, books, managines, video games, anime cards, charactor figures and many more. As you can see in this pic, they have a big “Atomu” figure in the show case.
They are all second handed stuff, so people sell interesting or rare stuff to them, and they re sell them there. Even though they don’t sell brand new stuff, there should be something you might be looking for!