Adopted by My Enemy

My nineteen years of life were taken advantage of by a fake family. With the vow to seek revenge still fresh in my mind, I chose to live my life again. Yet why have I returned to the night I was kidnapped from a burning castle? "Hwelp me! Hwelp me! The willian ish twaking Maedie!" My savior ended up being the enemy's son?! For days and nights I followed him to the enemy's castle, but upon arrival, a warm welcome—"Ack! Father! Second Brother's picked up another living thing!"—wasn't what awaited me. "You're my daughter, do whatever you want." "Brother is here, it's okay. No one can touch you. No one." "Liana, my dear child." "Why shouldn't you marry your brother?" They've all gone crazy... (Source: Malang, translated)