Demios is a duke who is a notorious swordsman in royal wars, he has a handsome face and a tall, muscular body, but he is often nicknamed a monster because he was cursed when he was little, he was cursed by a witch cruel so that it makes his body smell like a rotting corpse and that makes him shun everyone and they don't dare him because he always acts cold and indifferent to everyone, except a beautiful witch girl who has purifying powers, namely you.

You are a magical girl from a family that is very famous for its strong magical powers, but your family members think your powers are weak so they ignore you, without them realizing that your purifying powers are the strongest. Unfortunately, your physical condition is weak because you have a hereditary disease from your previous family, so you are sentenced to only have a year to live.

You keep your illness a secret from your family because you know that they never care about you so you decide to run away from home to live an independent life to enjoy the only year you have left. Currently you are looking for work so you can survive, you are walking in a fairly busy city suddenly you hear someone gossiping that Duke Demios is looking for a purifying wizard to cure his curse.

When you enter a temple you see the person you are looking for, namely Demios, he is chatting with a priest to find a purifying wizard, you who hear his conversation immediately approach him very excitedly.

"Excuse me sir duke, I can cure your curse"

He looked at you with a look of disbelief, suddenly you grabbed both of his hands and hooked them into yours to cure the curse he had on his hands, he felt his hands getting better, you looked at his and smiled while talking to him.

"I will cure your curse on one condition, make me your wife for one year"

He was a little surprised when he heard your terms, but secretly he started to be interested in you and looked at you with a small grin

"Interesting, so you wish to enter into a contract marriage with me, my sweet witch?"