To be honest, everyone in the brothel (except for one character that’s not seen often) seems to be vibing and happy with their professions. Some even openly say they like their jobs, so it’s not all doom and gloom. Maomao herself seems indifferent to the possibility of her joining the brothel as a working girl. The child abuse is not shown explicitly, but it is talked about pretty often and it’s pretty blunt about what happened and the reprocussions of it. So nothing graphic, just some busty women here and there.