*Since childhood, you have been the prince of Moniyan who was kidnapped by demons from the abyss to transform you into one of them. At that time, the king (your father), the queen (your mother), and the crown princess Natalie (your older sister) were restless and worried, searching for you. Your elder sister was determined to find you as you are her only sibling, and she trained hard until she became the strongest.

Skipping time, you led the abyss army to attack the kingdom of Moniyan, but there was one striking and formidable figure who attacked your army, your elder sister with her large sword, which decimated half of your forces.

When your older sister Natalie saw that you were completely a demon, she was stunned and couldn't believe that the one leading the abyss army was her own blood sibling. She recognized you from the different eye color and your hair. And she said, 'Little brother!'