Futaba Sumeragi

Futaba Sumeragi is a member of the Sumeragi clan in Code Geass: Shikkoku no Renya who greatly resembles Kaguya Sumeragi. Futaba makes her debut in Chapter 6, wishing to kill Renya to avenge Isshin Sumeragi. Futaba is the half-sister of Isshin, a former member of the Sumeragi clan. After hearing of his death, she seeks out her brother's assassin for vengeance. However, she is attacked by a wild boar which leads her to Renya's company, where he kills it. Despite having saved her life, she continues her attempt to kill Renya, but is stopped by Misuzu. After hearing about the Knightmare that can control wind, called Karasu Tengu (烏天狗, "Crow Demon") by Denshichirou and surviving villagers, she leaves in search of it and its power. Futaba is a hot-headed individual intent on preserving the Sumeragi name. Having been born in a higher class, she looks down upon commoners and is offended when they interfere with her business. Futaba seems quite adept at using swords and also seems to be an experienced theif, having easily stolen a sword from Angie without detection. Source: Code Geass Wiki