I'm a prisoner, but I can't focus on my studies and the unexpected ending makes me feel sad, so I came here to refresh myself for a bit.
It's Suwon Hwaseong, and it was a local bus stop in the story. In fact, it's not a road where buses pass, and there's no stop.
If you take the Rose of Sharon from Seoul, you will be in Suwon in 20 minutes.
If you are thinking of going, I recommend going before the cherry blossoms bloom.