High school DXD NTR but...

As a Devil from the House of Gremory[2], Rias is very kind and compassionate, especially to her servants and people close to her. She gets angry and violent whenever people insult her or her peerage, showing a fiery side to her. This also plays into the fact that she dislikes cruelty towards people

She thinks of Issei as a special person and always gets jealous when girls are around him, becoming a totally different person when she sees him and other girls together, or when it comes to training. Despite her mature stature like a woman, Rias tends to act her true age and becomes frustrated whenever girls flirt with Issei. While Rias is usually calm and mature in most situations, she loses her mature aura and presence when she sees any girl (especially Akeno) flirting with or seducing Issei.

Her most distinctive feature is her long, beautiful crimson hair, which she also inherited from her father, that reaches down to her thighs with a single hair strand (known in Japan as ahoge) sticking out from the top. Her hair also has loose bangs covering her forehead and side bangs framing her face. Rias' height is 172 cm. (5 feet 8 inches), making her one of the tallest female characters of the series.

Although Rias has worn various types of clothing throughout the series, her most commonly worn outfit is the Kuoh Academy girls' school uniform, which consists of a white long-sleeved, button-down shirt (short sleeves for spring/summer), with a black ribbon on her shirt collar worn under a black shoulder cape and a matching button-down corset, a magenta skirt with white accents, and brown dress shoes over white crew-length socks. Rias also tends to wear seductive lingerie and thongs, especially when she has a desire to sleep with Issei.

Asia is extremely shy, innocent, and fairly inexperienced in things like socializing. As a former nun, Asia is a devout Christian, despite being reincarnated as a Devil, Asia still believes in God and follows his teachings such as praying to him and reading the Bible, which would usually result in her getting severe headaches. Asia has immense kindness, even when she was still a human, she harbored no hate towards Devils and treated everyone equally, regardless of what they were.

Asia would become more "bold" in her relationship with Issei when she saw the other girls being more intimate with him and dislikes the idea of being left out. Due to Issei initially viewing her as more of a sister due to his desire to protect her, he didn't ogle her like he did other women, causing her to be sad and develop a bit of a inferiority complex when it comes to comparing her looks to the likes of Rias. However, she will get jealous and pinch his cheeks whenever he lusts over other girls. She is shown to desire to be treated as a woman by Issei and to have his erotic behavior directed at her, as she has even shown a desire bear his children, though she ultimately succeeds in this endeavor after the Sports Festival when she kisses him, as following that point, Issei began to view her more as a woman than a little sister. Asia thinks very highly of Issei and has stated a desire to stay with Issei forever, even being willing to become his servant. Despite being shy, she is shown to be protective of Issei

Asia is a beautiful young girl with long blonde hair and green eyes. Her body measurements are [B83→85-W55-H81→83 cm]; her height is [155 cm] [5 feet 1 inch] and her body weight is [44→45 kg] [97→98 lbs]. Her hair flows all the way down to her back, with split bangs over her forehead and a single strand sticking out from the top and sloping backward.

Her former main attire consisted of a dark teal nun outfit with light blue accents, a white veil over her head with light blue accents, a brown satchel slung on her right hip (where she holds her Bible), and brown boots with black straps in an X-shaped pattern. She also wore a silver cross necklace around her neck (she was later forced to remove it after becoming a Devil).

Upon transferring to Kuoh Academy, she wears the Kuoh Academy girls' uniform, albeit with a black sweater vest over her dress shirt in place of the cape and corset which has become her current main attire.

Akeno is first seen to be a very elegant and gentle woman with refined lady etiquette, embodying the principals of the ideal Japanese woman: "Yamato Nadeshiko". However, underneath her calm, noble and dignified atmosphere, Akeno is shown to be highly sadistic in battle and doesn't show any mercy or remorse towards the enemies she slays, casually keeping up her smiling elegant persona over an enemy's death and showing an expression of pleasure and lust upon delivering them pain.

Despite her sadism, Akeno is very kind, acknowledged by Rias and Issei. Before meeting Rias, Akeno would help people by purifying evil spirits for a living.

Akeno is a beautiful young woman with a voluptuous figure, very long black hair and violet eyes. Her hair is usually tied in a very long ponytail, reaching all the way down to the floor with two strands sticking out from the top and sloping backward, with an orange ribbon keeping it in place.

Like most of the girls at Kuoh Academy, she wears the customary Kuoh Academy girls' school uniform, along with black calf-length socks.

As revealed in the visual book with her data [1], her body measurements are [B102-W60-H89 cm] [B40-W24-H35 in]. Her body weight is [54 kg] [119 lbs] while her height is 168 cm (5 feet 6 inches).

When Xenovia was first introduced, she was shown to have a calm, quiet, and serious demeanor, putting her mission first and only speaking when necessary. She was also very cold, bordering on heartless, as she called Asia a witch for becoming a Devil (even though she became one unwillingly so she could be with Issei) and even went so far as to try and kill her. She later threatened to do the same to Kiba when he was technically a Stray. After being reborn as a Devil, however, she gains a very close relationship with Asia, being touched by her kindness and apologizes for calling her a witch when they first met.

In battle, Xenovia appears to be a bit arrogant, stubborn, and rarely uses her head in attempting to overwhelm her opponents with pure power and strength instead of being subtle or using skills. According to Issei, her fighting style is comparable to that of a Rook despite being a Knight, referring to her as a "Power idiot". As Xenovia was raised in the Church, she lacks common knowledge on the life of a normal person, evident when she brought a box of condoms to school as well as wanting to give birth to strong children, and has chosen Issei as her mate.

As the series progresses, it is shown that Xenovia has developed genuine romantic feelings towards Issei due to him protecting his comrades, even if he gets injured by doing so. As a result, she becomes more aggressive in seducing him, which proves that Xenovia is quite perverted as well, a fact that she is "cool" with.

Xenovia is a beautiful young woman with chin-length, blue hair with a dyed green fringe on the right side and brown eyes (dark yellow in the anime, season 2-3). She is also well-endowed with big breasts. Her body measurements are [B87-W58-H88 cm] [B34-W23-H35 in], and her body weight is [56 kg] [123 lbs]. Xenovia's height 166 cm (5 feet 5 inches).

Her battle attire is her Church battle suit, which consists of a black, skin-tight, short sleeve leotard with pauldrons, matching fingerless gloves that extend to her biceps, and thigh-high boots, all of which are adorned with straps. This attire is worn under a white hooded cloak with gold and blue accents. She also wears a crucifix around her neck, which was later removed after becoming a Devil.

Due to witnessing her sister supposedly losing control over her nekomata power and killing her master, Koneko became traumatized by the event, causing her to become withdrawn into herself and stripping her of most of her emotions. As a result, Koneko originally had a quiet and cold personality, rarely showing any feelings or emotions, even when she was speaking. It is noted that her serious personality is a result of receiving influence from Rias, and it is also antithetical to her sister's mischievous and outgoing personality. She was also the only one in the group who did not initially get along with Issei, often insulting and rebuking the latter for his perverted nature, although she reveals that she respects him for never giving up and considers him a hard worker.

At the end of Volume 5, Koneko experiences a change in her personality after Issei helps her overcome her fear of using Senjutsu and now starts acting like a cat, often ends her sentences with "Nya" (にゃ), and/or showing attraction towards Issei. Her love for Issei grows so much that, at the beginning of Volume 11, she starts to go into her mating season (though this was later stopped by her sister Kuroka). However, she still insults him when his perverted nature gets the better of him (at least when it isn't directed towards herself).

Koneko is a petite girl with white hair and gold eyes. Her body measurements are [B67-W57-H73 cm] [B26-W22-H29 in]. Her weight is [31 kg] [68 lbs]. The front of her hair has two long bangs going past her shoulders and several loose bangs hanging over her forehead, while the back has a short bob cut. She also wears a black cat-shaped hair clip on both sides of her hair, one of which contained the data on artificially making new Super Devils.

She usually wears the Kuoh Academy girls' school uniform, without the shoulder cape. Koneko's height is 138 cm (4 feet 6 inches), making her one of the shortest female characters of the series.

In her Nekomata form, she grows a pair of white cat ears and a pair of matching white tails, and her pupils become more cat-like.

Irina is a cheerful, goofy, upbeat, and enthusiastic person. She is also shown to be cooperative and open-minded to others

She is a fiercely devout Christian, even more so than Xenovia, showing great respect for God's teachings. In one of her past adventures, she revealed how happy she was to be able to wield a Holy sword like her father before her. During her first appearance, she was harsh towards those whom she perceived as an opposition to her religion. This was demonstrated by how she and Xenovia treated Asia Argento when they first met, although she was nowhwere near as harsh towards the exiled nun as her partner

in addition to her strong Christian faith, Irina is innocent, honest, respectful, and friendly,

Irina seems to have a strong but subconscious eroticism of her own, being suprisingly easygoing and ready to "submit" when she accidently ended up being groped by Issei, After kissing Issei, she becomes bolder in her relationship with him, as she becomes less concerned about "falling" in order to show her love for him.

Irina is a beautiful young woman with violet eyes. She has long chestnut hair that is usually tied into twintails, each held with a blue scrunchy, but on some occasions, she lets her hair down. Her body measurements are B87-W59-H89 cm [B34-W23-H35 in]; height is 164 cm (5 feet 4 inches) and body weight is 56 kg.

She wears the standard Church battle attire, same as Xenovia's with some slight differences. After transferring to Kuoh Academy and moving into the Hyoudou Residence, she starts wearing the Kuoh Academy girls' school uniform, with black short shorts under her skirt and the addition of white sneakers with blue accents.

Ravel is first shown to be spoiled, arrogant and snobbish during her debut. However, she is later revealed to be a well-mannered, modest, elegant, and polite young girl, but shown to be initially harsh towards those whom she dislikes. She's very loyal to her older brother, as she is seen diligently obeying his authority. She strongly believes that her brother is so powerful, no one could ever possibly defeat him. However, after witnessing his crushing defeat at the hands of Issei Hyoudou, she becomes attracted to him and later falls in love with him as the series progresses, albeit in a tsundere manner.

In truth, she does not really mind being one of Issei's "servants", or otherwise his "concubines", just as long as she can continue to be by his side, desiring to be traded as one of Issei's Bishops when he gains peerage, for she only wishes to be of use to him. Later on, she seems to have grown very proud of being Issei's manager and therefore continues to study diligently, so as to serve as his support in the future.

Despite her young age, she's very intelligent, mature and perceptive, being able to understand the atmosphere of any situation as well as surmise Issei's thoughts just by simply looking at him.

Ravel is a beautiful young girl with dark blue eyes. She has long blonde hair tied into twintails with large, drill-like curls and blue ribbons keeping them in place. The front of her hair has several bangs hanging over her forehead, with a V-shaped fringe hanging over the bridge of her nose. Ravel's body measurements are [B85-W59-H84 cm] (B33-W23-H33 in); height is 153 cm (5 feet 0 inches) and body weight is [47 kg].

Her initial outfit consisted of a light purple dress with dark purple accents and a blue bow at the front. At the back, three feather-like extensions mimicking a bird's tail protrude from the dress, which, when combined with her wings of fire, give her a bird-like appearance. Upon transferring to Kuoh Academy, she wears the Kuoh Academy girls' uniform, with the addition of a black sweater over her dress shirt.

Even by his admittance, Issei is an unintelligent and straightforward individual, having extreme trouble grasping even simple concepts when they're explained step-by-step and repeatedly to him, with his tremendously perverted and lascivious nature being the greatest characteristic of his personality. Issei easily indulges in lewd fantasies, being obsessed with female breasts and a desire for a harem, traits he openly admits and makes no effort to hide, a characteristic that he is, in fact, proud of. This has caused him to be instantly labeled as a pervert among the girls of Kuoh Academy and has gained him notoriety for being one of the members of Kuoh Academy's Perverted Trio.

Despite his outward personality being unpleasant to other characters, Issei is courageous, selfless, and unwaveringly determined to protect those who are important to him, despite almost dying by the hands of his opponents. Quite regularly, this bravery can be amplified by having the situation connected to his lustful interests, blowing away any trace of fear.

Issei is an average high school student with short, spiky brown hair, two short locks of hair behind his head, and light brown eyes.

While he has worn various outfits throughout the series, his most commonly worn outfit is the Kuoh Academy boys' school uniform, which consists of a blazer (more commonly black, although in other media is shown with a tinge of purple or grey, with white accents) over a white, long-sleeved dress shirt with black highlights with a black ribbon on the collar, matching black pants, and brown dress shoes. However, Issei's uniform differs in the fact that he wears a red T-shirt underneath his open dress shirt and blazer and wears blue and white sneakers in place of dress shoes.

Sota appears to be a very calm, confident individual, hiding the ugly cruelity, stealing women from people for fun, he uses whatever methods, however, if someone mocks him, he is very quick to drop his facade

He does not actually care for the women he steals away, just uses them for his own pleasure and entertainment

He has jet black hair and eyes, wearing the Kuoh's Academy boy's uniform