Matriarchy: After I Transmigrated, I Spoiled My Shadow Guard Rotten

[Not a pure romance, all male leads are sexually inexperienced, one woman with multiple men]

The top assassin known as "Blood Moon" from the modern, mysterious assassination organization Zero unexpectedly dies after a mission. Her soul transmigrates to a different world where women are superior to men, and possesses Feng Qinghuang, the infamous female emperor of the Fengqi Kingdom. The original owner was debauched and extravagant, with a harem of three thousand beauties who were little more than ornaments. The court was in even greater disarray. Finding herself in an unfamiliar body and surrounded by this mess of excess, Blood Moon feels nothing but deep disgust and a sense of not belonging. All she wants is to get away from this farce and find a way home, or at least some peace. One confused night, through a twist of fate and in a haze of consciousness, she fails to avoid the trouble the original owner left behind and ends up taking a silent, shadow-like guard with an icy presence, Ying Qi, to her bed. It should have been just one insignificant night in the life of the empress, but it becomes the beginning of everything…