Idiot Adventurer: You're an F rank and I'm jealous of your sword, let me insult you.
Saint: "Says facts about how strong he is".
Idiot Adventurer: Oh he's strong, I'll just act like I was worried he would be too weak for this.
MC: Huh, he's quick to adapt. As expected of a C rank.
^
That is my reaction and thoughts on this.
That kid is a horrible person, don't just play it off as him doing something good but wording it badly.
You give him a face like that while he is insulting the MC, and expect him to be a good person?
Nah, he's an entitled rookie who I hope dies off later because of his arrogance.