EWWWWWWW

I think its just a small river of some sort they dont have a sewege system during in that era yet

It's a story about a demon living in the body of a human princess with elves and magic....i don't think this is historically accurate

Even if it's not historically accurate,i think it's still in that era where it's still clean,you know what i mean? So i think they really don't have a sewege system yet ╮(￣▽￣)╭

An era where it's still clean? Medieval capital cities are purpotedly the nastiest and stinkiest places precisely because of the lack of sewage system or proper hygiene practices. I know I'm just being pedantic here but this chapter seriously bothered me hahaha

Okay let's say it's a river and not a canal, but it's a river in the middle of the city, precisely lacking a sewage system. So where do they dump their chamberpots??

You're right! Without a sewage system,it's worse!!!.
Sorry about that(づ￣ ³￣)づ. But,i mean,the water looks clean so i guess it's a river,and since magic exist there they probably just "poof!" all the nasty sh*ts