Emma

Emma is a Succubus who, like many other people, was drawn into the world of Arbatel by the magic of the Grimoire and was a student at the Grimoire High School for a time. She makes their debut in Chapter 78.

Appearance
Emma has the appearance of a young woman with dark skin and light hair that is tied into two long ponytails at the back of her head. As a Succubus, Emma has two bat-like wings on her back, pointed ears, and a long tail with a heart-shaped tip. Unlike the regular Devils, Emma doesn't have horns, but does have two tiny black wings on the sides of her head. Like all Succubi, Emma has a womb tattoo on her lower abdomen. She also has large breasts.

During her stay in the Grimoire, Emma wears the usual school uniform, consisting of a seifuku and a plaid skirt which she shamelessly leaves the top unbuttoned, baring most of her torso and a long black tie that laid between her cleavage. She also wears long, dark knee socks and white shoes with black toecaps and laces.

Personality
At first glance, Emma seems to fit the stereotypical image of Succubi, which is that they're only interested in sex. This can be seen as she was scantily clad taking sexy selfies of herself in the school library, telling her boyfriend this was totally natural for Succubi. She also has a seductive side as she told her boyfriend that it was cute how he would pretend not to be interested in her when he's actually super into her.

However, this only superficially matches Emma's personality as she is really diligent and works hard to get better at school subjects. She was also very flattered when her boyfriend revealed that it's this hard-working side that he finds most amazing about her, showing that Emma likes people to like her for her personality rather than her physical attractiveness. She also apologizes to her boyfriend for teasing him (although he wasn't angry), showing that her seductive side can also embarrass her.

As revealed in her future dreams in Chapter 80, one of the reasons Emma studies so hard is that she later wants to go to the same uni as her boyfriend. She also seems interested in teaching others as since her boyfriend wants to be a teacher she has thought about maybe trying to become one too.

Physical Traits

 * Succubus Physiology:
 * Sexual Libido: Succubi have a very high sexual libido, and given the opportunity, they will attempt to engage in sexual activities with most men they meet. However, although Succubi may seem excessive in this regard, they are actually very loyal lovers and once a Succubi has chosen a steady partner, she will never betray him.
 * Wings: As a Succubus, Emma has bat-like wings on her back, but they are too small to actually fly with them. Unlike most Succubi, however, Emma also has tiny wings on the sides of her head, roughly were a normal Devil's horns would be.
 * Succubi's tattoo: The Womb Tattoo of a Succubus changes when they "eat" (in other words, have sex with) men. When a Succubi doesn't regularly meet with men, the tattoo looks quite laid-back and lazy.

Possessions

 * Smartphone: As seen in Chapter 78, Emma has a white smartphone that she often uses to make selfies.

History
Emma was one of the numerous people whose consciousness was absorbed into the magical world of the Grimoire High School by Arbatel, although the exact circumstances of how this happened are unknown. Like everyone else, Emma was brainwashed by the enchanted school uniform and really believed that she was a student at Grimoire High School.

During her time at at the school, Emma befriended a human student who eventually became her boyfriend.

Plot
Emma makes her debut in Chapter 78 when she and her boyfriend study at the school library after school. However, Emma kills time taking selfies with her cell phone, which eventually leads the boy to ask her what she's doing. Emma replies that it's totally normal for Succubi to take sexy selfies and asks him if he wants her to stop. Her boyfriend says he doesn't mean that and reminds Emma that she asked him to study with her.

Emma says the library is "sooo good" for selfies through. Her boyfriend replies that they can continue with the selfies when they finish studying, to which Emma seductively asks if he means he wants to "join in" with the sexy selfies. She teasingly adds that it's cute how her boyfriend pretends not to be interested in her when at least she gets the impression he's really into her.

After a short pause, Emma's boyfriend finally admits that he actually likes her. However, he surprises Emma by saying that he likes her more for her hard-working and diligent side and not for the Succubi's image that claims they're only interested in sex. He adds that studying with Emma was the first time he experienced the joy of teaching someone else, which led to his decision to later become a teacher, for which he was very grateful to Emma. Embarrassed and flattered, Emma apologizes for teasing him, even though her boyfriend tells her he's only saying what he feels about her. This makes Emma even more embarrassed, whereupon, in order to change the subject she says that they have to start studying.

It is believed that Emma was safely sent back to the normal world after Arbatel released everyone's consciousness in Chapter 80. Emma may also have been among those who sent a petition to Arbatel, since she developed a new relationship with her boyfriend thanks to the Grimoire.

Zoological Classification
Succubi are a Devil subspecies that can be similar in appearance to Lesser, Greater or Elder Devils but lack Devil horns, posses a womb tattoo-like marking on their lower stomach, and possess a prominent interest in sex and all things sexual.