Read The Blooming Flower in the Palace Is Crazy Manhwa
Summary: The Flower of the Imperial Palace is Crazy / 황궁에 핀 꽃은, 미쳤다
The crown prince of the kingdom of Taesa, Lee Hyun, holds a loveless marriage with the daughter of the General, Seoh Ryu, to bring in his favorite commoner as his concubine.
But… Many people thought of Seoh Ryu as an obedient lady, but in reality, she is a woman full of charisma. An unexpected night makes Lee Hyun realize that he made a mistake, but it was too late. Everything is in Seoh Ryu’s hands.
The story of how the kingdom of Taesa and Lee Hyun is shaken helplessly by the fierce Seoh Ryu.