Okay, so Yuusuke, Hibiki, and Hizumi's worlds are all open for visiting with descriptions on their top levels! However, I also played Shun here and we did have a Saki for a while from a series called Shin Sekai Yori/From the New World which I'm open to people exploring if they'd like. Here's the rundown:

The majority of the series takes place in Kamisu 66, a district located where the modern city of Kamisu does in the Ibaraki prefecture of Japan. It's 1000 years into the future, but it doesn't necessarily look that way: it's a very rural collection of villages surrounding the Tonegawa river with some slightly traditionally inspired architecture. The clothes can be similarly interesting, visually.

Travel involves the use of small personal boats along the various canals that thread through the villages, and people can be seen all around using telekinesis for even the most mundane of things; writing, gardening, farming, etc. There's some evidence of electricity, but anyone who actually looked into it would find that it all appears to be powered through the windmills on the rivers and canals, and it's limited to larger buildings like the libraries. The language used can probably make it clear that it's somewhere in Japan, although there's some odd vocabulary referring to the telekinesis everyone uses (juryoku) and various animals that exist around.

I can go into more detail if anyone's curious (it's a very fascinating and well-built setting), but the option is there!