Midori Anzai

Midori Anzai (安斎 緑) is the human mother of Yuuki Anzai whom she had with her devil husband, Tamaki Anzai. She works at ONL as a devil researcher in which she goes under her maiden name Midori Sako (佐古 緑).

History
Several years before the start of series, Midori Sako (which she was called at the time), met Tamaki Anzai; a devil who had been held in isolation for his mass murder. Midori states that, from the first time they met, she was concerned for him. As a devil researcher at ONL, she continued to meet with him, and during their Dialogue Sessions, he finally opened up to someone since the death of his lover and the two grew close over their sessions together. Eventually, after spending much time together, Midori fell in love with Tamaki, and he confirmed that he felt the same. Since their love was mutual, they looked for a way to live together, in their own way, may it be Midori carrying a gun and tranquilizers with her, using handcuffs or not being alone together.

One day, Midori came to Tamaki asking him to be a part of the 15th Hybrid Birth Project, to which he accepted quickly because he owed his life to the facility. She informed him that she would be the mother and that it would be artificial insemination, which was a great relief to Tamaki who thought having sexual intercourse would be impossible with a human. Thus, their son; Yuuki Anzai, was born. There were a lot of people involved with his birth, and due to some reasons, Midori never gained a legal parent-child relationship with her son. She also didn't tell him about the fact that she was his mother and that Tamaki was his father, leaving Anzai to think that he was an orphan, but Midori still looked over him at the ONLO orphanage from a distance and continued with her research about devils and their co-existence with humans.

At an unknown time, Midori and Tamaki got engaged.

Appearance
Midori is a middle-aged woman with a slim build and a few age marks. She has dark hair (presumably black) which is wavy and falls down to below her shoulders with her bangs parted at the middle and strands framing her face. She has two moles on her face; one under her eye and another one on her cheek. Her son Yuuki is also noted to be very similar to Midori, as he inherited her smile, messy black hair and even the birthmarks (moles). She is often seen dressing professionally; wearing a blouse with a white lab coat overlying it, and heels.

In the past, she had short hair, which was about nape-length with bangs covering her forehead.