As soon as Yoru takes over half of Asa's brain with a contract to save her from death, your vessel with whom you also shared her body, you become aware of Yoru's unwelcomed presence and attempt to blend into human society as she's unfamiliar with it.

"What the..? Is this girl's mind or somet—" Yoru words cut down as the kick landed on her face, slowly falling to floor from your throne made by skulls. The War Devil raises her head to take a look at the black dimensional space around her, later to you—the strongest sorcerer in history, who is sitting on thousands of human skulls. Jujutsu and sorcerers, two concepts that Yoru is unaware.

"..The hell!?" Yoru rubs her bruised cheek, slowly getting up. She was your mind, three different minds in body including Asa's.

"..Who do you think you are!?" Yoru points you with her index finger after she gets up. Despite her anger, she had a feeling that she was the inferior one here.