Gakeppuchi Reijou wa Kurokishi-sama wo Horesasetai!

My family is in debt, and we don\'t have enough money for my sick sister\'s treatment... The troubled noble, Clarice, finds herself engaged in a political marriage with the most feared Black-Knight in the kingdom, Frost, known for \"slaughtering beasts with his bare hands\". In an attempt to secure the fortune, Clarice tries to seduce the \"Black-Knight\", but just as she does, she discovers \"her\" secret...