I don't really know myself I had to look at other spoilers from people in the comments so if you want a full explanation you should look more down but basically there's no justice that will be done the queen dies because of health reasons, the child with blonde hair is basically a copy of the concubine because the king made them fuck so the kid looks like him, the concubine is a black wizard and the king is his ex boyfriend that is reincarnated, he puts a spell on everyone so they love him, and the MC does get man's not one but 2. In the end she goes back to her world and the 2 guys follow her there. There really was no point in her going in the book because nothing was changed, other then her getting 2 guys.
Guys tbh I'm really just thinking of coming back when it's complete, I'm really hoping that maybe just maybe this is based off a novel and that the author will change the ending