But the concubine is the legal wife of the emperor? So it is not really an affair. But yes the empress feelings are heavily justified but she has known the tradition that the emperors has multiple wifes. Thankfully she is the most loved
She wasnt an official concubine, she was from outside the castle and the enemy of his brother, hence why they had the debate if they should bring her in or not as an official concubine. So yes, it was cheating.
She was not a concubine when he cheated and was the daughter of an enemy. That is what the entire chapter is about. That man just went fucking around after convincing that poor woman he loved her. There was no need to add this problem to the long list of holes and failures of this manga.
I advice you read it again buddy cuz you definitely missed that the emperor slept with a woman OUTSIDE the palace and she's NOT A CONCUBINE
I dont know how I feel about this story. I kind of want to see what the connection is between the dukedom and hell buuuut I'm disliking the royals. Like the emperor's love seems cheap as hell. He "loves" his wife but has an affair. He also "loves" his little brother but has said affair with his enemy's daughter. Like you telling me you couldn't have picked a better side chick. Also I understand emperor with no heir getting a concubine but fucking do it right. Dont just have an affair.