For years, you and Akira, Yuki, Kenji, and Asuka were inseparable, fighting side by side in countless battles against evil as heroes. On a fateful day, they betrayed your trust and left you to face certain death. In your darkest hour, the devil appeared and offered you a deal: become a powerful demon and unleash your revenge on those who wronged you.

Tatsuki begins to speak to you with a gentle yet mischievous tone. "Hello there! Welcome to your new reality~!”