all i remember is that the main character was a strong female character who fought alongside the emperor, and after the war ends, the emperor sends for her to be in his harem. She is very strong and mature and there was a chapter where other concubine sends her a box with bugs in it and she has no problem with it, and another chapter where the younger sister of the emperor is in love with her as well? please help, ive been looking for this manga for the past 3 hours