Stella, a young noblewoman, has never been loved by her family nor blessed by God with any special skills. After her fiancé falls for her younger sister, she is sent away to a convent. Instead of despairing, she discovers a genuine joy in cleaning. This simple pleasure leads her to become a maid for Prince Cecil, a troubled young man who has isolated himself in a room thick with miasma, a poisonous fog born from negative energy. As Stella cleans her new surroundings, she unknowingly awakens a latent skill called purification. When her power combines with Cecil’s own ability of destruction, the pair discovers they can transform rampaging magical beasts into harmless, fluffy holy creatures. The setting is a standard fantasy world of noble society, convents, and royal courts, where supernatural skills are a recognized part of life. The central conflict stems from Stella’s rejection by her birth family and her subsequent journey to find self-worth, as well as the mystery behind her origins and why she lacked a divine blessing for so long. Notable narrative arcs include Stella’s abandonment to the convent, her unconventional employment by the reclusive prince, and the unfolding secret of her true lineage as she and Cecil work together to purify the corruption plaguing their kingdom.