I'm Just the Incompetent Crown Prince's NPC Sister Princess, but I Sympathize with the Villain, So I'll Try to Help Her - No Princess Route?! Then Let's Create One!

Lucia, the first princess of the Kingdom of Faticia, meets Alicia, the daughter of a marquess, who laments that she never wants to be a villain's daughter. Lucia takes pity on Alicia for her future engagement to Lyle, Lucia's half-brother, leading Alicia to confide in Lucia that her engagement will