Oozumou Reijou: Zense ni Sumou-bu Datta Watashi ga Suteneko Ouji to Haa Dosukoi Dosukoi

When Floortje finds herself reincarnated into the world of an otome game, she discovers that her new life isn't quite following the script. As the daughter of a noble family, she finds herself caught in unexpected circumstances that threaten to derail her peaceful existence. But Floortje has a secret weapon—memories of her past life as a sumo wrestler, along with the indomitable spirit of the sport itself. Armed with her unique skills and unshakeable determination, Floortje must navigate this unfamiliar world of courtly intrigue and magical politics. Along the way, she'll forge unexpected alliances and discover that the game's storyline might not be as straightforward as it first appeared. With the principles of sumo as her guide, she'll need to find her place in this new world while uncovering the mysteries behind her reincarnation. (Source: J-Novel Club)