First clue

"What now?" To say that the prince was surprised by my question would not give justice to the weird face he made while hearing what I asked about. "Don't tell me…" Casting a quick glance at me, his face tensed up.

"Yeah, that's exactly what I need to know. But just for you to know, while I'm not sure about the place myself, I will know once I reach it whether you guided me properly." Given that I showed a huge chunk of my abilities to the man, there was a chance he would send me off to the literal end of the world, just so that I wouldn't be there as a danger to him or his colleagues. 

That's why I was sure to emphasise the fact that I would know if the place he would potentially point me at would be right or not. The fact that this knowledge would come from the system was my sweet little secret.