One of the laws is apparently “once you join a party, you have to stay in it except in very specific circumstances”. Really? If I narrowly escaped death after trying to fight a giant monster with a bunch of idiots, I would quit altogether instead of working with them again. Such a law would be impossible to enforce and cause tons of problems. But it helps create conflict, so the author included it.
Another problem is the MC’s past. As a child, he was kicked out of an institute because his talent in healing was bad. Even though healing talent is rare enough that he was accepted into the institute solely because he had it, even though monsters are everywhere and people are constantly getting injured, there is no tolerance for anything below perfection in healing? They just threw a child into the streets to fend for himself instead of dropping him off to heal soldiers in some backwater town. That just doesn’t make sense.
Also, the girl who joins the MC knows that his former teammates were scammers, so how does a receptionist of the guild not know? The author seems to be trying to portray the guild as unusually corrupt, but the complete lack of regulation of adventurers goes to far. Even the townspeople are afraid of them, and are attacked by them? That’s a huge problem for whoever is in charge of the city. How is nothing being done?