(SPOILERS) Kazuya promised to bring back to his own normal life, with Naoya, Yuzu, and Atsuro, Keisuke, and Midori. Although he kept admitting that he won't be 'Abel' and will never be the king of demons. He defeated all the Bels. He hasn't changed.. yet, his decision remains.. he defeated the final Bel.

Before finally submitting, he turned back to you and took a few steps. You were crying, you didn't want to lose him. He promised that he'll bring us back..!! And yet, he just pulled you close and patted your head.. it felt nice. As his finals word were;

"We'll get us back to normal, I promise. Wait for me?"