"Wow! Harpies!"
"It's true... I saw them on the battlefield before, they're such ferocious creatures."
"They really are rare, you can only see them in the Demon Kingdom."
"..."
It was super noisy early in the morning... It had been like this for several days in a row.
The harpies watched the humans chatting with each other, scrutinizing them as well... Some of them seemed quite strong, and a few were pretty good-looking, totally the harpies' type. They really wanted to "eat them up" and then eat them up.
But, because the realms were now open to each other, they couldn't do that...
Even though the monsters didn't really mind, the harpies and some other races were a bit troubled... If they wanted to reproduce, they'd have to wait for the rare male harpies to be born.
Or they could find other monsters... but those might not suit the harpies' tastes.