This has the potential to actually be quite interesting. Definitely a lot of potential for drama, both good drama and annoying drama (I really hope it's not the latter).
The first chapter did cover A LOT of ground already, I would have expected that the plot twist with her being a sex worker would come at the end of the chapter.
It'll be interesting to see how our MC is going to handle his GFs job, and I hope that there'll be different drama besides "Oh, I hope she doesn't cheat on me".
Thank you for translating, I am looking forward to the next chapter