They just had to close down because there are no more tourists unlike how it was before covid. The people coming to Tokyo Tower has decreased and so, they have no choice but to really close this branch.
Other branches are still open though, and is located in crowded areas where Japanese people usually hang out so I think that's still fine.
I haven't read the manga, but I know it would be fun to read.
Hope you could catch up to the anime. It's really an adventure.
OP has references to the revolution and some parts of the world, if you notice.