The premise is good but the supporting character is quite bad, and the story relies on a few plot holes to work.

The second character (heroin?) keeps doing thing without being asked and expects to be paid for them, makes trouble and blaims the MC for not solving it ectr.

The way MC gets forced to stay with her is even a huge (not really but it pokes you eye out with how obvious it is) plot hole. He earnes close to 500g in a previous chapter and goes around to find a smith to make him a weapon she ends up helping him find the smith and he asks for 200g for the sword then the girl starts saying how he ows her 10% as a fee (wich is bullshit) and starts mouthing off munch of fees he owes her and MC for some reason doesnt have the funds to pay for it.

Later she provokes a noble in to a fight wich the MC has to win (he wins cuz he is OP) and the MC doesnt even mention once how she screwes him over and over again expects to get pain for it.