@Koslun Definitely. Dude was way too calm for someone who supposedly fell into a trap, especially considering his encyclopedia listed all the traps and how to spot them.
That, or he's setting up to let them weaken and/or distract the boss so he can swoop in after. I'm still waiting for that female warrior to finally leave that thug of a hero and go with Magus.
Okey... Soooo the (absolutely NOT oblivious) trap is:
1 - A TRAP!
2 - A secret way to go to the boss
3 - A secret way to go to the vault where all the money and artifacts are stored
The warrior run and with the nun, they sacrifice the other 2. and then the hero come, save the girl, beat that boss. and happy ending. wait i think they join to MC harem