If it isn't in the center, then why call it the city center? It should be labled accordingly, shouldn't it?

[He's not being difficult, he swears. There's a distinct note of earnest confusion in his voice that directly translates to his expression. What do you mean it's not the center center?]

Ah, crime. Is... that why it is called the 'red light' district? Is it emblematic of blood then? If that would be the case though, what does light have to do with it?

[Please, Hijikata. Please explain the origins of the term red light district. Please it's important.]