Fiona reincarnated as a minor villainous noblewoman in an otome game, destined to be brutally murdered for abusing her younger foster brother, Clovis. To evade her death, she was supposed to shower Clovis with affection, but she ended up genuinely falling in love with him!? The only one who can save him—the man destined to eventually become the Demon King—is the "Heroine," the Saint. For the sake of her beloved foster brother, Fiona keeps her feelings completely hidden. However, for Clovis, who has already been showered with an abundance of affection, it is already too late—"I won't let you escape anymore. ...Are you prepared?" The limit-breaking love story of a foster brother who won't let go × a foster sister who wants to flee!