Prologue: Awakening

Standing before Yasha, Muzan reaches out and grasps the other oni's chin. Tilting his head back to lock eyes with each other, Muzan strokes Yasha's cheek with his thumb, "You've been a good boy, haven't you... ? "

Yasha shivered, but didn't dare disrespect his Master by not answering him, "Yes, Master. "

The older demon smiles, "Of course you have. From now on, you'll be known as Upper Moon Three, Yasha Akuma. "