I'll Aim For Ruin And Become The Perfect Villainess!

"Wow, being a villainess is actually pretty easy!" Sashna reincarnated as a villainous daughter in the world of a romance novels her grandchildren had once told her about in her previous life. Having lived her life to the fullest in her previous life, she is determined to protect the happy ending of her favorite novel's heroine and not change the story by playing the villainess to the fullest...or so she thought, but she can't get rid of her gentle personality from before reincarnation and has a hard time becoming the villain. Sashna is excited to attend her first evening party, but she almost changes the story right away... For some reason, she is treated like a loser by her fiance's guardian knight, who is supposed to be her ally, but Sashna desperately tries to protect the story. -But what lies ahead is an unexpected truth...? https://www.cmoa.jp/title/1101427652/