Previous Chapter :
Cain (MC) : "No. There is only tracks going inside, but not outside. And it looks like the people that came here weren't searching for Hargan's Lair."
Current Chapter :
Kahn : "Cain, we haven't told you about this place yet, right?"
Cain's inner thoughts : "I'm still pretending I didn't know anything about it until now."
Welp, it certainly looks like you did a shitty job of it, lucky that those "top-rankers" that help you are as dense as an ecchi protagonist.
This kind of things happened a few times in the previous chapters as well, and it's irritating that the dialogues just aren't accurate.
Luckily, the story is nice enough to make up for it, but still, i wouldn't hurt to be accurate, especially on little details like those :/