I might not be the best person to give a japanese lesson, but in this context "chotto desu" means "sorry, but it's not ok". It might have triggered something for them. Better to say "chotto hanasemasu", or upgrade it a bit to "maa-maa hanasemasu."
I have to admit, if they are only concerned about hiv, that's a really good point. But if we throw in other stds and pregnancy, it still seems rather strange.
Maybe japanese people don't believe in gonorrhea?
I'll concede that japanese can be pretty honest, on average. But the stuff you are talking about is an accepted part of the culture. Can you list some countries where it is common to knowingly infect someone?
I thought white westerners were still highest on the preference list. But perhaps girls can imagine they are fucking a Japanese when they are with an Asian?
I'm totally confused - I would imagine the hokkaido dairy farmer's daughter would be hotter than the honshu rice farmer's daughter ( who'd probably be 65 years old).