大相撲令嬢　～聖女に平手打ちを食らった瞬間相撲部だった前世を思い出した悪役令嬢の私は捨て猫王子にちゃんこを振る舞いたい　はぁどすこいどすこい～

Synopsis

(from: Mangaupdates) The past life of the otome game's villainess was a sumo wrestler!? Florche, whose engagement with the prince was annulled after she was falsely accused of a crime, recovers the memories of her previous life as a member of a women's sumo club after being slapped by the local saintess. She also realizes that this world is exactly the same as the setting of the otome game she played in her past life. As a lone sumo wrestler, she cannot forgive such injustice! What she may lack physical strength, she makes up with her sumo spirit! With her slaps and sumo stances, she knocks down the handsome capture targets from the beloved otome game! She will protect her favorite second prince and save the kingdom!!