Ouzumou Reijou: Zensei ni Sumobu datta Watashi ga Sute Neko Ouji to waha Dosukoi Dosukoi

One day, the villainess Floortje is suddenly told by her fiancee the Prince that their engagement has been annulled. When she is slapped by the saintess, the memory of her previous life in the women's sumo club comes back to her.... As a sumo wrestler, I cannot allow this kind of humiliation! She may not yet have the power, but she has the sumo spirit! Her upstroke and shikimata will slap around the characters from this otome game that she loved in her previous life!

(Source: Comic EarthStar, translated)