Description

Codename: Diva
Astral Dress: Shaddai El Chai
Angel: Gabriel

Miku is a Spirit and an idol. She hates men to the point that Shidou even had to crossdress in order to interact with her. Her Angel, Gabriel has the ability to manipulate and brainwash people.

Miku is very flirty, both before and after warming up to Shidou, she expresses this towards most women who fit her type (and Shidou) and is very blunt about it. After warming up to Shidou, she doesn't hesitate to flirt with both him and the other Spirits and does not even mind Shido having a harem, in fact, she pretty much encourages it. Shidou describes her current personality as "very childish", and she is very affectionate.

Just like Kotori, Miku was a normal human before she became a Spirit. Ever since she was little, Miku loved singing. She wasn't good at studying or sports, but she could sing better than anyone else around her. As an aspiring singer, she had always dreamed of performing on the big stage. That dream came true when she debuted as an idol singer at the age of 15 under the stage name Tsukino Yoimachi. It was the best thing that Miku could have wished for, doing the very thing she loved and being adored by her fans.
Her career, however, came to an abrupt end just after about a year when she refused to have sex with a hotshot TV producer. Before Miku knew it, false scandals about her began to appear and she soon fell out of favor with her agency along with her fans beginning to hate her. Miku thought that she could reconnect everything back with her singing, but then suddenly lost her voice.

As Miku contemplated suicide, Phantom appeared before her and turned her into a Spirit. Afterwards, she used her spirit powers, regained her lost voice, and debuted again using the name Miku Izayoi. She became famous due to her voice that is was known as 'sound anesthetic' and released several super popular tracks. However, she never appeared in magazines, television, or any public media. Miku held only private concerts and the only ones who were invited were her loyal female fans due to her hatred for men.