Side City

Everyone has sides. Not just Thomas. It's everyone. Just because you can't see something doesn't mean it's not there. People could have as few as two or over 100. Usually it was around 5-10, though.

People also think sides just go in their host's head when they aren't there directly, and yeah, they do sometimes.

But most of the time, they were in the big, bright world of Partialis.

To be particular, due to how many people lived in urban places nowadays, most were in Side City.