I hope someone will pick this up btw is the emperor really the ml and is the favored concubine gonna be bad or a biatch?
I mean I think the concubine is going yandere for the mc. I'm pretty sure she never has felt attraction before for the emperor and then she started to feel things for our mc when they hung out together. Plus with recent events I think she is starting to resent the emperor due to the fact that he actually seems to be falling in love with mc. When she said she would help mc get closer to the emperor I doubt somewhere deep inside she actually believed that the emperor would actually catch the feels. I think she is starting to realize that she indeed has feelings for mc and doesn't like it that the emperor likes her too. or at least that was the vibe I was getting (seriously like she only ever got flustered and blushy around the mc)
What's the title of the prequel
http://www.mangago.zone/read-manga/itsuka_koi_ni_naru_made/