Midori Anzai


 * This article contains major plot spoilers from the manga that have not been revealed in the anime. Proceed at your own risk.

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
Approximately 20 years prior the story, 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.

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 it would be artificial insemination, which was a great relief to Tamaki who thought having sexual intercourse would be impossible with a human. Initially, Midori wasn't supposed to be the mother, but after realizing that she had fallen in love with Tamaki after spending much time with him, and with Tamaki confirming that he felt the same towards her, they got the permission to use Midori's eggs and Tamaki's sperm instead. However, Midori didn't carry the child since she was a very talented researcher, ONL couldn't afford to lose her since being pregnant with children who have devil blood could cause problems. Because of that, they used a surrogate, Ibuki Takeya, to carry Midori and Tamaki's child. Thus, their son; Yuuki Anzai, was born. There were a lot of people involved with his birth, and due to the reason that Anzai was a part of the Hybrid Project, ONLO received full custody of him and had to monitor him, so 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.

Since Midori's and Tamaki's love was mutual, despite the difficulties, 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. Because of their dedication, Midori and Tamaki got married.

Appearance
Midori is a middle-aged woman with a slim build and a few age marks. She has black hair, 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 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.

Personality
Midori is shown to be a very calm, responsible and mature woman who is knowledgeable, which makes her very understanding of others. She is hardworking and holds responsibility for her own actions, as she never lets her personal feelings and emotions get in the way of her job. When it does, she immediately acknowledges her mistakes and will properly apologize. She is persevering, patient and loyal, and will let things take their time without rushing things. Despite that, she is shown to have somewhat of a teasing, honest and playful side, in which she generally comes off as an easy-going. At the same time, the most notable trait in Midori's personality is how direct, blunt and straightforward she is. She never cuts around the bush and will freely speak her mind whether what people may think. She can at ease discuss matters that people are embarrassed to talk about which generally aren't talked about openly as she does. This is something several people, including Tamaki and Yuuki, has commented on.