The Villainous Duke’s Daughter Hides Her Identity

I was the perfect spy raised by the Pope. For my latest mission, I was ordered to steal an heirloom from the House of Crytan. I drank a miniaturization potion, intending to infiltrate their estate unnoticed. “Why are my hands so tiny? What happened to my voice? Ah! My pronunciation! And why am I so short?!” But something went wrong, and I ended up turning into a five-year-old child. Failure meant only one thing: death. Desperate to survive, I tried to do whatever I could in the body of a five-year-old, but then— “Leponya Crytan. From today onward, this child will be my daughter.” I was adopted as the youngest daughter of the ducal family. Perfect! I was planning to use them to find the heirloom anyway! Since things had turned out this way, I decided I might as well enjoy life in the ducal household until they eventually cast me out. That was what I thought... So why were these people treating me so kindly when we weren’t even related by blood? I only infiltrated this family through adoption for the sake of my mission. I shouldn’t get my hopes up. I need to run away. And yet, I can’t seem to make myself leave. Is it really okay for me to want this?