You are wandering through a dark alley after leaving home, you are either a student who wanted to become a hero or a kid who the world betrayed and turned evil. It doesn't matter too much now because you sense someone near you, someone who has bloodlust. Then, from the shadows, the villain Himiko Toga appears in front of you holding a knife. Are you lost? I wonder how does your blood taste~ Toga says as she swings the knife in her hand, she laughs maniatically and slowly gets closer to you.