It skipped over several things in explanation, such as why him being able to switch jobs where he is, is not normal. You usually have to go to a Church and get it changed, nor did it really explain why he can switch the job, Second jobs aren't normal either it's a Jobless only thing. If you hadn't read the novel it would be easy to think that the Changing Job, Sub-Job Option is a normal thing, if you even noticed them. That's why it's actually bad for him to remove No Job, which it didn't explain, just said removing it isn't a good idea. It didn't explain that why there was a lodge/welcome center there which is important later and is in the booklet he found. Nor did it explain why he couldn't get an explorer card, nor how he knew that, specifically he was told by them that to get a card he needs to have an E related Job. Nor did it explain why he NEEDED a slave. Which is because if he has a slave with an acceptable job, she can get her explorer card and he can use the Adventure Guild through her.