Yukari is a first-year student in Hyakkaryouran Conflict Resolution Council. She is proud of being a multi-talented student, and although she sometimes seems to falter, she is also a student with a strong core who can quickly rise to the occasion! Personality The multi-talented member of the well-known Kadenokouji family, Yukari strives to aid others since a young age. However, she mostly felt obligated to help others at that time under the expectations of the people around her. After a fateful encounter with Goryou Nagusa, she decided to join Hyakkaryouran to help as much people as she can under her own volition. She may not be as skilled as her upperclassmen, but she strives to improve everyday. Her sheltered upbringing has left her unaware of many common aspects of student life in Kivotos, such as convenience store food and video games. However, she has adapted quickly and greatly enjoys exploring her newfound independence. Appearance Yukari has really long purple hair that reaches the ground, purple eyes, and blushy cheeks. Halo Yukari's halo resembles a purple circle with a circular hollowed-out section. Uniform Yukari wears a common Japanese sailor style school uniform that consists of a white dress shirt with a red sailor ribbon around her neck and a breastplate. She wears a navy blue colored skirt, knee-high socks and a traditional Japanese geta. She has a really baggy and long sky blue haori with white flower patterns that reaches the ground. For her accessories, she has several cherry blossom flowers on the right side

Introduction While enrolled as a student of Trinity and chairman of the Justice Realization Committee, Tsurugi is also the Trinity's strategic weapon. She is belligerent, violent, and possesses a destroy-first, think-later attitude towards whatever she finds disagreeable. Due to the efforts of its vice-chairman, Hasumi, the Committee has (just barely) kept under control. Tsurugi may be an uncontrollable mad dog, but in front of Sensei, she can't help but reveal her feminine side and is unable to hide her shyness. Personality At first glance, Tsurugi gives the appearance of a deranged psycho. When in battle, she has a habit of a destroy-first, think-later attitude and often laughs uncontrollably. However whenever she's around Sensei as well as her friends, she easily shows her true colors, she gets very shy, shows her feminine side, and has a heart of gold. And in combat, Tsurugi is actually a professional, calm and thoughtful tactician who always thinks what to do first and what to do last. Appearance She has long, wavy black hair. She has a red, sharp-looking choker, and a red rim on her collar. Halo Tsurugi's halo was a bloody red circle dripping from the rim. Uniform She has black messy long hair reaching the floor with straight bangs and two long cowlicks, dark red eyes, and large black disheveled angel wings on the back. She wears a standard uniform, wearing a black sailor dress with red strip on the sleeves, her black tattered skirt tainted with blood splotches all over and red untied ribbon on the neck. She also wears a red webbed choker on her neck, black nail polish, and black boots with red shoelaces.

3rd year student and member of the Gourmet Research Society enrolled at Gehenna Academy. While fundamentally a calm and good-natured girl, like anyone else at Gehenna, she will occasionally cause great trouble for others. People may think she is just a quiet young girl, but she is actually the long-reigning food fighter champion of the Kivotos Eating Tournament. Personality Despite Akari's quiet and calm apperance, like the rest of Gourmet Research Society, she occasionally causes trouble for others. She also has the capability of consuming absurd amounts food without gaining weight at all, making all-you-can-eat buffets seem like child's play, allowing her to become the champion of the Kivotos Eating Tournament by as eating over 50 bowls of ramen without getting a stomach ache. Appearance She has a long blonde hair reaching her legs with braids tied to her left side, gray jagged horns and bright violet blue eyes with pink cross pupils Halo Akari's halo has a magenta diamond inside a cyan circle surrounded by six spikes in different sizes. Three spikes are spread out outside of the circle on one side, and three spikes are held closely together on the edge of the circle on the other. Uniform She wears a long black military uniform with tassels, red and white linings, gray collar tied with a red ribbon, gold buttons and white Gehenna logo on her left sleeve strapped with two belts connected to gold chains. She also wears a pant skirt underneath, black stockings and black high-heeled shoes.

A member of the Engineering Dept. at Millennium School. Despite being unsociable and unsophisticated in speech, she exhibits a prominent natural talent in engineering and has invented many strange marvelous objects. Her inventions are practically flawless, and while it wouldn't be too much to call all of them masterpieces, there's always at least one bizarre feature included that leaves their users bewildered. Personality Although she is rather introverted, she is quite dedicated with engineering and inventing, similar to the other Engineering Department members. Her passion leads to numerous unusual inventions. She also likes making cosplay outfits as her hobby, one being her cheerleader costume which was made during her first days of making cosplay outfits when she was younger. Appearance She has black wavy hair tied into ponytails on both sides with a pair of yellow and purple orbs connected to a band and engineering googles hanging on her forehead. She has black floppy dog ears, a black tail with a white tip, and gray eyes. Hibiki's halo is a small yellow barred circle surrounded by two larger circles, the outer circle being thicker. Uniform She wears a white and yellow hoodie, a black and gray tank top with short pants underneath, webbed stockings and black boots with a Millennium logo on the rim and soleprint. She also carries two handcarries, a schoolbag with a sling for her tools and an oversized crate for her mortar shells.

A serious secretary of Abydos' Countermeasures Committee. The type of girl who values principles and rules, she's doing her earnest to restore Abydos High. Personality A shy and patient girl who displays great tolerance for her committee members' often wacky ideas and plans. However, once her patience has been exhausted, she's been known to throw a tantrum of epic proportions. Appearance She has black bob cut hair with bangs and a French-braid styled headband that matches her hair color. She wears red glasses, white butterfly hairpin with red stud and a speaker earpiece. She has elven ears and amber eyes. Halo Ayane's halo has a red crosshair inside on another circle with holes on the oval part on the crosshair. Uniform She wears a standard uniform, including a navy blue blazer with Abydos access badge, cuffed sleeves, a beige sweater, a tucked-in white shirt and cyan tie underneath, and a pleated, plaid black skirt. She wears a cyan armband with dark stripes, with kanji written in it. She has a black socks with a butterfly on the rim and brown uwabaki with red shoelaces.

Hikari has outstanding talent for driving trains, and was chosen as an officer along with her younger twin sister Nozomi. However, Hikari is terrible at paperwork and administrative tasks. She follows her whims and does things at her own pace without worrying about what others think, which causes all kinds of incidents. Nozomi has a cheerful and lively personality and doesn't worry about small details. Perhaps because of this, Nozomi often gets into trouble with her older twin sister Hikari. Although she's the type to jump right into anything that looks interesting, she is very diligent when it comes to her responsibility for train operations.

Michiru is the club president of the Ninjutsu Research Department. Every day, she works hard with her fellow club members in uploading videos and doing all sorts of other activities in order to show everyone in Kivotos how cool ninjas are! Personality A girl with a dream to let everyone know that ninjas are cool. Thanks to her dream and behavior, she is often ridiculed by others, causing her to sometimes have second thoughts when doing something ninja-related. Due to her passion of following her ninja dreams, she often only looks at the path that would seemingly lead her to being a better ninja, not considering other possibilities. Appearance Chidori Michiru has grey hair that fades into a dark greyish color, tied into twintails by two little black ribbons. She has golden eyes, a pair of grey Tanuki-like ears, and a grey Tanuki-like tail. Halo Her halo is has a light reddish color taking the form of a shuriken. Uniform Michiru wears a white tank top with a sarashi underneath it and a red and blue sailor-like ribbon above her chest, a black scarf around her neck that fades into a light red color, a pleated dark blue mini-skirt, a black obi around her waist with a big bow on it, thin black tekko on the arms, and black thighs, with her right thigh just reaching her knee. She is covered by some loose bandages around the knee area. Michiru also wears a kimono-like sleeve on her right arm

Introduction A member of the Engineering Dept. enrolled at Millennium School. A talkative girl who can't stop talking about physics and mechanisms of machinery. Whenever there is a mechanical problem at Millennium, she is the first to arrive on the scene to explain the situation. Personality Nicknamed as the "Walking Encyclopedia." Whenever there's a problem or if someone asks a question, Kotori would go as far back as its history and explain every single detail. Due to this, people often tend to avoid talking to her, just so they don't have to hear her lectures. On the other hand, when Sensei asked her to describe her hobbies and favorite things, she gets hesitant and flustered, as seen in her relationship story. Appearance She has bright orange, messy bob cut hair with bangs and a braid styled on her left. She has bright red eyes and black glasses. Halo Kotori's halo is an orange triangle surrounded by a larger triangle and three angled arrows, each corresponding to the larger triangle's edges. There are also three hexagonal shapes in each of the smaller triangle's angles. Uniform She wears a standard uniform consisting of a navy blue furry winter coat, her white shirt, a loose blue tie underneath, and an unbuttoned pleated, black skirt tied to straps, alongside a pair of white socks and black sneakers with blue shoelaces.

The scenario writer for the Game Development Dept. at Millennium. Both she and her younger twin sister , who is the Illustrator, Midori are literally developing video games in the Department. Although her cheerful personality is the polar opposite to her shy sister, their passion for games are strikingly similar, which make them both great partners. Personality Momoi is a hardcore gamer. Contrasting Midori, Momoi is more energetic and cheerful. Contrasting Momoi, Midori is quieter and more reserved, only giving in to outbursts when angered or excited. She is no less passionate towards gaming than her sister however, though she's less likely to be offended. She's also a bit more pessimistic than she is. Appearance She has long shoulder-length blonde hair with bangs and tied into several pigtails using red ribbons. Momoi a has magenta eyes. Midori also has lime eyes. Halo Momoi's halo consists of two neon pink circles with four pointed kites on its rim directed inwards. Their both are same Momoi's is neon pink color, while Midori's is Neon Green Uniform They both wear a standard Millennium high-school uniform, including a white and hoodie, a tucked-in white shirt with a blue tie and black suspenders underneath, alongside a pleated black skirt, long socks, and magenta floppy boots. Momoi wears a cat-eared headset with a neon pink color scheme while Midori's is Neon Green Color Scheme.

Under the pretense of a maid club, but in fact, C&C is Millennium Science School's special operations unit who are tasked to remove any potential threats within the school. As a result they work alongside with the student council, Seminar. Members: Neru Mikamo Asuna Ichinose Karin Kakudate Akane Murokasa Toki Asuma

The Disciplinary Committee.....as the name goes, they are responsible for keeping order within the oftentimes chaotic Gehenna Academy. Their members wage a never-ending battle in keeping the unruly students from doing trouble within or outside the school. Hina Sorasaki (a 3rd year student and the current chairwoman of Gehenna's Prefect Team, who is rightfully feared by every student in the academy, if not all of Kivotos. seemingly laid-back and lazy individual who can be extremely serious, disciplined, and swift in her actions, especially when enforcing school rules or fighting on the battlefield, Despite her cold exterior, she is a gentle person with a secret desire for rest and to be free from her responsibilities) Ako Amau (Ako, an administrative officer of the Disciplinary Committee, belonging to Gehenna Academy! As a capable assistant, she's always by Hina's side, working until midnight or all night, as if to say she's loyal to her beloved Chairwoman Hina. She looks like a knight in disguise. With the Sensei, Ako can be standoffish and even arrogant, though she eventually warms up to them, showing concern that can lead to self-induced stress) Iori Shiromi (A 2nd year student and a cold-blooded specialist of the feared Prefect Team. As the field captain of its assault corps, she immediately punishes students who violate the rules with overwhelming force whenever and wherever she finds them, plus She is frequently tired due to the demands of her job, especially dealing with troublemakers during holidays) Chinatsu Hinomiya (Enrolled at Gehenna Academy, Chinatsu is a 1st year student in charge of medical aid for the Prefect Team, Committed to observing the rules and the proper procedures, she's one of the few sensible people on the Team, and is usually the one keeping the more unruly members like Ako and Iori from running amok.. Beneath her serious exterior, Chinatsu is a sweet girl with a hidden gentle nature)

Introduction The self-proclaimed “Boss” (i.e. president) of Club Problem Solver 68, Aru is a 2nd year student at Gehenna Academy. She conducts her illegal business however she pleases. While Aru always puts on a cool, beauteous, and villainous facade, she has a habit of breaking character often and exposing her true personality when teased or pressured. Despite the vain and conceited persona she wears, Aru is meticulous and caring for the people she is close to. There is definitely more to her than she lets on. Personality Rikuhachima Aru, the leader of Problem Solver 68 club at Gehenna Academy, is a second-year student with a knack for accepting various quests, legal or not. She puts on a cool, beauteous, and villainous facade but often breaks character, revealing her true caring and meticulous nature when teased or pressured. Behind her mischievous personality, Aru is a shy artist, striving for perfection. She has a thirst for knowledge and constantly seeks to expand her understanding of the criminal underworld, enhancing her problem-solving abilities. While not exceptionally intelligent, her unwavering determination and focus on her goals make up for it. Aru persists relentlessly until her tasks are thoroughly accomplished, though she can also be goofy and prone to panicking when things don't go according to plan. Her true goal is to make Problem Solver 68 a reputable criminal organization. She constantly tries to impress Sensei on many occasions, and frequently asks them to become a member of Problem Solver 68, despite their constant refusals. She indulges to her obsessions of portraying a delinquent and idolizes the image of a criminal without comprehending the true nature of such individuals. Appearance She has long, straight shoulder-length pink hair with bangs that cast shadows over her eyes. This lends itself to her trait: the appearance of a villainess or a demon queen. This is augmented by her haughty and pretentious smile and the horns that grow out

An ice queen who belongs to Trinity's Supplementary Lessons Department. Originally, she had dropped out of her school, but for one reason or another, she has returned to school and is working on her schoolwork again. She is lonely, but she voluntarily keeps her distance for fear of bothering others and is worried by the students in Supplementary Lessons Department. Personality A cold person at the core, much of Azusa's aloof nature stems from her training under Arius and being raised as a weapon. Because of her dedication to the mission, she has no hobbies or any interests and does not make any attempts to befriend her classmates in the Supplementary Lessons Department. The training made her extremely adept at combat, having extensive knowledge on how to kill the other students by destroying their halos and lives a spartan lifestyle, focusing on her missions and studies ahead. Through her experiences in the Supplementary Lessons Department, she learns to enjoy life and find purpose in her actions and develops a friendship with Hifumi and Sensei as a result. However, she still has an emotional conflict between her loyalty towards Arius Squad and the necessity of murdering them to prevent Trinity and to a lesser extent Kivotos from falling into ruin. Appearance She has long, silver hair. Her eyes are pink which fade into blue. Her hair is decorated with various purple floral accessories and a black ribbon. Halo Azusa's halo thematically takes after a woven laurel, portrayed as a yellow unclosed circle that resembles a crescent moon with various olive leaves. Uniform Azusa wears a collared white shirt and a long, black dress overtop with frills and flowers, and wears white-and-grey striped panties. She wears white-pointed shoes and black, cuffed socks. Over her uniform, she wears a long-sleeved, white capelet (which makes her outfit resemble a serafuku) with a yellow Trinity logo on her right sleeve, a yellow Arius logo on her left sleeve and a gold Arius brooch

Member of the Supplementary Lesson Department of Trinity General Academy. Originally, she belonged to the Justice Realization Committee, but her grades fell and she fell into a crisis of repeating a year and was placed in the Make-Up Work club. She thinks she is an elite, but in reality, she is too stupid to keep up with her schoolwork. She has a hobby of collecting weird magazines, and often sees weird elements to even the most trivial of things. Personality Koharu is a naive and delusional young girl with a good heart, while her skills allowed her to become a part of the Justice Realization Committee. However, because of her poor intellect and delusional behavior, she is often set back. Notably, she expresses a strong prudishness, calling out anything remotely suggestive and/or weird. Despite this, she is often caught having doujins and other goofy material, a clearly hypocritical behavior. Because of her delusions, she also believes that Sensei has strong crazy fantasies towards her and fully expects to be ravaged by them, though she often denies this in turn. She is a girl struggling to reconcile her own personal standards with her burgeoning adolescence. However, beneath it all she is a dependable person who provides lighthearted banter and a springboard to bounce off of for the Supplementary Lesson Department. Appearance Koharu has pink eyes and pink hair with bangs that cover her forehead. Her hair is styled into two chest-length twintails by red ribbons, which also frames her face. She has crow-like wings on her head and lower back. Halo Koharu's halo consists of two pink rings that fade into a lighter tone downwards, with a pair of wings on top and a pair of bean-like shapes below. Uniform Koharu wears a black Trinity school uniform consisting of a black sailor-like sweater, a white and pink sailor collar, a pink sailor-like ribbon, a dark pink pleated skirt and white leg warmer socks. The sailor-like sweater is a bit loose on her left shoulder.

Ako, an administrative officer of the Disciplinary Committee, belonging to Gehenna Academy! As a capable assistant, she's always by Hina's side, working until midnight or all night, as if to say she's loyal to her beloved Chairwoman Hina. She looks like a knight in disguise. Personality On the surface, Ako appears to be a professional and diplomatic woman. Behind the scenes, she is thorough and strict with herself and others. This makes her an excellent manager for the Prefect Team when Hina is unavailable, but can also make her paranoid and act out of line when under stress. Although Ako is not exactly one of the nicest students and can be difficult for others to work with, she does mean well, working to the bone for the sake of Hina and Gehenna. Ako is more standoffish and arrogant towards Sensei, but still warms up to them in the end, such that her concern for them causes unwanted stress. On the other hand, she is absolutely loyal to Hina to the point of obsession. Appearance Ako is a well-endowed young woman, that have satin soft blue hair color. Her hair is shoulder-lenght and wavy styled into two low twin tails at the back, with a side-swept fringe and two longer strands framing the face. She has an ahoge, which is a single lock of hair that stands up from the top of the head. Halo Ako's halo is light grey and its have a crescent shape with a little circle in the middle. Next to the crescent is another little crescent shape figure with a line with sharp edges that intersect it.

Enrolled at Gehenna Academy, Chinatsu is a 1st year student in charge of medical aid for the Prefect Team. Committed to observing the rules and the proper procedures, she's one of the few sensible people on the Team, and is usually the one keeping the more unruly members like Ako and Iori from running amok. Personality Due to her formal way of speaking tends to give off the impression of a distant, quintessential public moral member of the board of trustees, but she's actually a sweet girl who softens up when in the presence of cute animals. Additionally, she is extremely busy, barely having some seconds to drink a tea. Appearance She has long shoulder-length blonde hair tied in pigtails with red bands each and black ribbon hairband. She has elven ears and amber eyes with black glasses. Halo Chinatsu's halo is a small red circle with four red points forming a crosshair. Uniform She wears a white collared uniform shirt with middle pleated decors, a red string tie and red military armband on her left sleeve. She also wears a black skirt with a red stockings and black boots with red laces. Her hands are covered by red gloves and slung over her shoulder is a large brown satchel bag with a black red cross. The bag is bursting with medical supplies, such as syringes and compression bandages.