This takes place after Shido seals Yoshino's powers but is before Kotori is revealed to be a spirit since its been stated that Miku became a spirit around the time that Tohka first appeared. (Shido meeting Miku will replace Kurumi's first appearance. Hope you enjoy this!

Despair...Anger...Sadness...Hate…Loneliness...Betrayal...That's all Miku felt in her heart and soul. Thanks to the corrupt TV producer who tried to get her to sleep with him, her career as a singer is ruined. All her fans, her agency, and the people who she thought were her friends betrayed her. And because of that, she developed a psychogenesis-type Aphonia that caused her to lose her beautiful singing voice. Miku was looking down at the ground from a tall building, considering suicide as she couldn't find any more reason to live. She felt like there was no other way to end her pain, but to take her own life. Singing was her sole purpose in life, the one thing that brought her joy and happiness. Now, she had nothing. No one was there for her in her time of need. This is the answer she thought. The way to end everything. But as she was about to jump off the building, a being appeared before her. It was a mysterious figure that had a strange appearance as the being was surrounded by an elaborate mosaic that made it impossible for Miku to see her true form.

(Hey, do want power?)

"What? Who are you?...What are you?" She asked. The mosaic figure had an odd voice. Miku could understand it, but it had a voice that made it sound electronic and somewhat disturbed her.

(Answer the question. Do you want a power big enough to change the world?) Miku, who was hesitate to answer nodded. That was when the strange entity brought out a shining violet gem-like object and went closer to the poor girl.

"What is this?"

(If you accept this power, you will have a voice so beautiful, you can fulfill your wish. Anything your heart desires.) Miku thought about it for a moment and realized that if this power is what this mysterious figure said it is, she could not only get her voice, but she can take her revenge on those who turned against her, especially the one who ruined her life.

Hanten Tohka (Inverse Theme) plays

(If you want the power, then grab hold. That's all you have to do in order to accept this power.) Miku nodded and grabbed the gem. Which was when her body began to envelop in a violet light. She could feel the power surging through her. But the power felt malicious, and from there her dress turned into a revealing militaristic theme a crimson jacket with black-colored edges that is very open, revealing her chest and most of her backside, and has a dark crimson belt with a skull as the buckle. A whip with thorns on it hangs on her belt. She also wears a crimson mini skirt which shows her thong and a pair of black thigh-high heeled boots. The outfit is completed by a pair of red gloves and the hair pin she wore turned from a yellow flower into a fire pin.

(Marvelous, you now have the power of Gabri…) The being stopped when it realized that Miku was displaying powers of negative energy and disappeared.

"Now that I have my voice back and this power, nothing will stop me from taking my revenge." She said before summoning her Demon.

"AZAZEL!" She yelled and before her demon weapon appeared before her and laughed maniacally. That was when a huge spatial quake was created and destroyed the area the newly created spirit was in which made the alarm sound off, along with the alarm inside of Fraximus Ship.

The whole crew woke up and saw the destroyed area of Tengu City and were in shock at the sight. The spatial squake that Miku caused was a massive scale, no one was caught in it but it could have been worse if she used her new inverse powers at max, almost if not equal to the Nankou area fire of Tengu City.

"This is…" Kotori said but stopped when Miku disappeared from their scanners.

"Everyone, we have to prepare ourselves, this spirit might be the most dangerous we have ever encountered." Kotori said while trembling.

"Commander..." Kanazuki said.

"All right, let's get ready, it's time for the next date!"

Sorry that this chapter is short, but this is the prologue. But I promise to make the official first chapter a good one. So until then!