Glutton Adored by Princess

A mythical beast, punished for stealing a sacred koi, is sent to the mortal realm and possesses the body of a disowned daughter branded a jinx. Wandering the streets in hunger and pain, she encounters a kind princess. Using her ability to devour miasma, she cures the princess’s son of a chronic illness, revealing her extraordinary nature. She is then adopted by the princess and given a new name.