The Darkly Adorable Immortal Girl

A certain handsome man picks up an adorable pet. It looks sweet and innocent, but it's actually sly and cunning. A certain woman: “Master, I've got a golden finger, immortal herbs, and a knack for putting weirdos in their place. How about taking me in?” A certain man: “You're the only one in this world I trust!” A certain woman: “...” A certain man: “What? You want to run? Not a chance! You little liar. You'd better keep deceiving your husband for the rest of your life.”