Responses
If I remember correctly, he was promised to be dismissed from his position as a guide and retire early. That was the plan to distance himself from the ML as he's so done and tired with the humiliation, shame, and being alone. He just wants to be relieved from his duty and retire with honor. That way, he'll receive compensation to support himself outside the military camp and start anew.
I'm sorry but what he knows the man is sus and the whole mission and situation is very shady, saying that he doesn't trust and everything but he still follows his orders and goes to the brothel behind the team's back? The fckass paired esper aside there is a team that actually watches his back and wants to protect him