Cursed to be an ugly cat--but maybe you're happy!

"I'll have you turn into a cat, sister." Marie, the viscount's young daughter, lost her fiancé to her younger sister Emilia and has been cursed even more. Her reflection in the mirror - an ugly cat!

Running away from her sister for her life, Marie, who escaped from their house, collapsed from loneliness and hunger, unable to speak. Then, a kind hand reaches out to her, "In the middle of this rain, poor thing...Would you like to come with me?"
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!

呪われてブサ猫に――でももしかして幸せかも！？

「お姉さまには、猫にでもなってもらうわ」妹エミリアに婚約者を奪われ、さらに呪いをかけられた子爵令嬢マリー。鏡に映った彼女の姿は――ブサ猫！？

命からがら妹の元から逃げ出したものの、声も出せず孤独と空腹で倒れ伏したマリーだったが、そこに優しい手が差し伸べられる。「こんな雨の中、可哀想に…私と一緒に来るか？」その姿は、”冷酷無慈悲の無敗の公爵”と社交界でも噂の人物で――。

不遇の少女が唯一無二の幸せを手に入れる、幸せ猫ライフスタートです！