Busaneko ni Kaerareta Kiyowa Reijou desu ga, Saikyou no Gunjin Koushaku ni Hirowarete Kizetsu Sunzen desu

Cursed to be a fussy cat--but maybe happy! "I'll let you be a cat, sister." Marie, the viscountess, has lost her fianc to her sister Emilia and has been cursed even more. Her reflection in the mirror - an ugly cat! She runs away from her sister for her life, Marie, who escaped from her sister's house, collapsed from loneliness and hunger, unable to speak. Then, a kind hand reaches out to her. A gentle hand offered her, "Will you come with me in the rain, poor thing? The figure is the "ruthless, merciless, undefeated duke" who is rumored even in social circles. An unfortunate girl gets her one and only happiness, and a happy cat life begins!