I'm about 2/3 done with my second playthrough. The first was a slightly naughty MC and in this one she has really gone overboard (which by the way results in A LOT more money).
Anyway, I wanted to mention something that I thought was a glitch but turned out to be more of a game quirk.
If you get to the point of the game after solving the kidnapping and you just wander around for a long time without getting any quests, it is possibly because you didn't purchase the Explorer License.
I purchased it right away in my first playthrough but since I then was aware that the MC rarely, if ever, needs to solo any dungeons, I held off on spending the 8000 for a license. I then got to the point where she is supposed to get the "Abnormal Occurrence of Monsters" quest and she never did, so I finally remembered that I was not an "official" explorer, purchased the license, and the same guy immediately told me to visit Jonah for the "Monsters" quest. So, if you are running around late in the game and your Quests are empty, it could be that you never purchased the license so won't get the quest.