Instinct

"Trade? You're seriously considering having us trade with other places soon?" Boju asked a bit perplexed, but Eiro just nodded his head as though it were the most natural thing in the world, "Of course. Any city does that, doesn't it?"

"But... isn't that dangerous? Trading with other cities would mean having to let people into here, and... I don't think the monsters are ready for that... like you asked us to, we tried to at least have everyone use the illusion tools to make them appear like people, but a lot of them really didn't like it..." the highland Orc pointed out concerned, but Eiro quickly calmed him down, "Don't worry, you don't need to let any people into the city. Rather, you just need to have some of the monsters, the ones you know you can trust, lead some small caravans to other places."