"My Sister-in-Law is Destined to Be a Villainess!? The Stepsister Will Do Her Best to Prevent Her Downfall"

[Manga Adaptation] My Step-Sister in This Reincarnated Life Was Supposed to Be a Villainess. If things continue as they are, my step-sister will fall into darkness, destroy the royal capital, and die. Furthermore, our family will inevitably fall into ruin. To prevent this, I must make my step-sister adore me, mediate between her and her attendant, and brainwash her so she doesn't fall in love with the Hero! ◆Bushiroad Works / Included in "A True Noblewoman is Cunning! Anthology Comic" / Manga: Tsukikesou Sensei