Oof, letting baddies off scot-free won't be good for them. Even if he's in hurry, he should've drag that fat fuck to gate where he'll depart from. The town guards should be there.
Probably MC rarely mentioned buff & debuff he use on his former party during battle causing them to mistaken that it's their own strength & getting carried away. Typical Banished-from-party fantasy trope
that's an OP ability. high risk high reward kind of skill. I don't think he's a total ass since the world would turned upside down if the skill is given willy nilly.
FMC got rare skill. Obviously the Guild admins would be noticed. Seeing an eternal g-rank veteran guiding newbie FMC will arouses suspicion of MC using her for his own gains.
Spineless & naïve who refuses to kill even the one who wants to kill his daughter & letting em' go scot free. For a 37 yrs old veteran adventurer in the world of medieval ages savagery, it's plain bullshit.