Well, eunuchs were also very powerful politically using their place of trust and knowledge to wield power behind the scenes. They toppled dynasties .There were emperors that feared them and were controlled by them.
And I feel the concubines are just now going to start showing their hidden claws. But speaking for myself, I don't enjoy all the machinations of the harem so I hope this won't include a lot of that, and I feel this emperor is written in a different way, def less formal , and showing less restraint by the rules. He's more of a warlord character. It's more fun and different imo.
Agree that eunuchs never directly serve any concubine nor even the queen. But I still think they hold a little more power than you think.. Some of them serve the royal family for many years so the king would know them since childhood and eventually listen to them more or at least give them the freedom to talk and give him advice if necessary.. They can also control and supervise other servants in the palace and pull out dangerous plans too.. They're not that hopeless.. In this manhwa the king kinda let the eunuch nag because he knows he's loyal to him and he was probably serving him for a long time..
that lady chang having a eunuch as her servant is major historical mistake.
any women of the emperor never have a eunuch as a servant. all the servants of concubines are required to be female. because even if eunuchs have their dicks cut off, romantic relationship is still possible with women and having a eunuch as a servant is big no no in chinese and korean history.
Also, another inaccuracy are the big amount of interference that eunuchs do in this story. They are not allowed as much freedom to speak as these eunuchs in this stories do. Any proper saeguk drama or chinese harem drama will tell you this; eunuchs serve but pretend to not see or hear anything that will get them into trouble, if they are too talkative towards the emperor, they can get demoted or sent to be whipped for punishment.
Also, kinda sad that all the harem girls seem to be stupid in this story. No one is acting smart or playing coy on their motives, they see Kang and they immediately want to shit on him. I'm still waiting for a formidable female opponent in this story. Not another jealous hag.