mantittiesimp

Does anyone know the name of the Japanese manga/smut/josei about a night princess who was like the leader of mages and was trying to push her sister a white princess of the day and saint to sleep with her knight (white princess knight) but the knight was secretly in love with the night princess? I think the day princess liked a mage

Please someone knows this manga where she married the knight she had a crush on and he liked her back? It is smut and su fluffy but I don’t remember the name!!! I think she is a princess and where in love with him but was compromise with someone else (that ended and the ml took her for his wife)