Koga Ogami

The present: The birth of UNDEAD

• Rebellious Reinvention: After the breakup of his former group, the pieces were rearranged. Koga, maintaining his wild attitude and his inseparable electric guitar, became part of UNDEAD along with Rei Sakuma, Kaoru Hakaze, and Adonis Otogari.
• Change in dynamics: Although in the present he displays an outwardly hostile, rude and frustrated attitude towards Rei (whom he often calls "bastard vampire"), deep down he maintains enormous admiration and respect for him.
• Maturity and responsibilities: During his second year, he began living on his own. To save on food expenses, he grows his own vegetables in the academy's garden, demonstrating a highly responsible and mature side that contrasts with his "bad boy" facade.

Profile and key features

• Personality: Blunt, impatient, and prone to losing his temper, but with a great sense of empathy, loyal to his friends, and protective of animals. He is frequently categorized as a tsundere character.
• Special skills: Excellent command of the electric guitar and an extremely keen sense of smell, which is why he detests perfumes or overly strong smells.

Early life and origins

• Spoiled childhood: He grew up in an average home where his parents spoiled him excessively, which influenced the development of his proud and arrogant personality.
• Love for animals: From a young age he has had a very strong bond with dogs, raising his inseparable corgi named Leon.
• The origin of his goal: He decided to enroll at Yumenosaki Academy after being completely captivated by Rei Sakuma's performances as a livehouse performer in the underground scene.

2. The Past: The Era of Deadmen

• Formation of the group: During his first year at Yumenosaki, Koga managed to get close to his idol and joined Rei Sakuma and Keito Hasumi to form the temporary and informal unit known as DEADMANS.
• Aesthetic influence: During this time, Koga idolized Rei so much that he imitated his way of speaking, his gestures, and even his style, seeking the approval of the veteran idol.
• Dissolution: Internal tensions and changes in plans by Keito and Rei led to the dissolution of DEADMANS, causing the group to fragment.

Koga's close friends and colleagues:

• Mao Isara: Classmate and close friend. Although at first Mao found him rude, he discovered that Koga is willing to listen, and they often support each other (they share, for example, a pollen allergy).

• Rei Sakuma: His object of admiration and rivalry; although Koga acts aggressively and sometimes challenges him, he holds him in deep respect (and Rei affectionately calls him "puppy").

• Makoto Tsukasa / Makoto Yuuki: With whom he maintains a positive camaraderie relationship, as seen in stories like Rockin' Star.

Koga's family consists of his parents and his corgi dog, named Leon.

Koga's signature consists of his full name written in Roman letters, with the "O" of his surname stylized as the face of a wolf showing its fangs.
Koga often threatens to bite people and growls like a dog at those he dislikes. Rei Sakuma often treats Koga like her pet, hence the nickname "Wanko."
Dogs are naturally attracted to him.
He is extremely good at card games, and in elementary school he was known as "Kou-chan, the wolf tamer who howls at full moon."
Koga loves his electric guitar so much that he swore on his life to protect it.
Koga suffers from pollen allergies.
During his second year at Yumenosaki, Koga began living alone in an apartment, as the commute to the academy from his family home was too long. To reduce his expenses, he took up gardening.
Koga doesn't like sweets.
Koga was the one who gave the unit its name to the UNDEAD.

Koga is a tall, well-built young man. He has spiky gray hair with a center-parted fringe. His hair is short, reaching just below his ears. He has light gold eyes. He wears his school uniform with a white shirt untucked and unbuttoned at the neck, and a black tie with a white cross on the side in the center. Notably, Koga's tie is not the typical one for the uniform. He also wears a long-sleeved purple shirt underneath, which has holes in it. He has a silver stud earring in his left ear and two helix piercings in his right ear. In his school uniform, he also wears a silver ring on the middle finger of his left hand. He wears dark red boots with the tops rolled down and black laces.

Wild and energetic, he has great self-confidence and always believes he is the best. A self-proclaimed "wolf," he attacks everyone regardless of who they are. Thanks to his keen sense of smell, he dislikes strong odors.

Despite his tough exterior, he actually cares deeply for those around him (like his UNDEAD colleagues and the Producer). He likes it when they trust him, and during the Halloween event, he even sulked after trying to tell Adonis about Halloween, when the latter claimed to already know about the holiday.

Age
18-19
She graduated from
Yumenosaki Academy
Circles
ANIMALS, Band "BB"
Ambassador
Bake Beck
Height
175 cm
Weight
58 kg
Birthdate
July 18 (Cancer)
Roommates
Tatsumi Kazehaya, Kanna (Temporary)
Laterality
Right
Blood type
TO
Tastes
Bells, musical instruments
I don't like
Beautiful things, strong smells.
Favorite food
Grilled Chicken (JP)
Grilled meat on a skewer (CN)
Food I don't like
Chives [ 1 ]
Favorite color
Silver [ 2 ]
Family
Parents, pet dog
Hobby
Playing guitar, songwriting, card games
Specialty
Guitar playing, keen sense of smell

They are a group of students from Yumenosaki Academy chosen for their exceptional talent and extraordinary personalities. The Origin of Their Bond: Originally, Rei, Wataru, and Kanata were known as "The Three Strangers." Later, Shu and Natsume joined. They were labeled "eccentrics" by the Student Council, led by Eichi Tenshouin, who used them as the academy's "villains" to unite the rest of the students and revolutionize the idol system. Despite being the target of this strategy, this painful past strengthened their friendship and created an unbreakable bond of loyalty. Members and Roles in the Group: Rei Sakuma (The Spiritual Leader): He is considered the older brother of the group. He uses his wisdom and resources to protect the other members, especially Natsume. Wataru Hibiki (The Theater Genius): He is Rei's right-hand man within the group. They share a profound artistic vision and a mutual understanding that no one else can grasp. Kanata Shinkai (The Sea Deity): He brings a mystical and relaxed aura to the group. Along with Rei and Wataru, he forms the original trio that bore the initial weight of the academy. Shu Itsuki (The Lone Artist): He is the most perfectionist and proud. Although he has trouble admitting it publicly, he deeply values ​​the respect and validation he receives from his four peers. Natsume Sakasaki (The Younger Brother): He is the youngest member. The other four dote on him, take care of him, and try to protect him from the darker aspects of the idol industry. Their Current Dynamics: Although the revolution at the academy has ended and each belongs to different agencies and musical units (UNDEAD, fine, Ryuseitai, Valkyrie, and Switch), they still meet frequently. They support each other in their individual projects and act with a blind trust that they don't show with any other character.

First Year
During this period, the council exerts absolute and dictatorial control over the academy's activities and idols, sparking the Trickstar unit's revolution. Eichi Tenshouin (President): Leader of the fine unit, charismatic but with fragile health that often keeps him hospitalized. Keito Hasumi (Vice President): Leader of Akatsuki, Eichi's childhood friend, and the strict right-hand man who maintains administrative order. Mao Isara (Treasurer): Member of Trickstar, constantly torn between his loyalty to his revolutionary friends and his duties on the council. Tori Himemiya (Secretary): Member of fine, a young man from a prestigious family who deeply idolizes Eichi.

ASTRO FES, one of Japan's largest and most prestigious music festivals. The professional idols from the agency Ensemble Square wanted to put on a completely innovative show.

To achieve this, they decided to seek out and join forces with talented high school students in Shibuya who were involved in musical activities outside the traditional professional idol circuit. This is how the paths of both worlds crossed, giving birth to the special unit Di:Verse.

The collaboration focused on the four main members of Project SEKAI (from the units Vivid BAD SQUAD and Wonderlands x Showtime) teaming up directly with four idols from Ensemble Stars!! They were paired up based on their affinities and contrasting personalities: Pair Collaboration Representatives Interaction Dynamics The Passionate Duo Tsukasa Tenma 🤝 Chiaki Morisawa Pure energy! Chiaki (the leader of Ryuseitai) instantly connects with Tsukasa's explosive personality, who dreams of becoming a global star. The Eccentric Magicians Rui Kamishiro 🤝 Natsume Sakasaki A perfect match of brilliant minds. Rui, the show director and inventor, finds in Natsume (leader of Switch) someone with his same level of eccentricity and stage magic. The Serious Talents Toya Aoyagi 🤝 Izumi Sena A slightly more stoic but mutually respectful relationship. Izumi (from Knights), known for being strict and professional, evaluates and advises Toya's polished vocal and musical talent. The Realistic Boys: Akito Shinonome 🤝 Jun Sazanami. Both share that background of giving their all on the streets and on stage. Jun (from Eden/Eve) and Akito get along very well because of their competitive yet focused attitude.

The interactions revealed an interesting culture clash: the Project SEKAI members act more like urban or independent musical theater artists, while the Ensemble Stars!! members are accustomed to the strict discipline of the elite idol industry. In the end, they got along incredibly well.

Juis Kojika — The Leader, Height: 180 cm. Appearance: He has an imposing and naturally imposing physique that he uses to his full potential on stage. His facial expressions and captivating gaze are his greatest visual attractions for fans. Personality: Dignified, calm, and extremely unflappable in any situation. As the main vocalist and leader of the group, he is extremely professional. In his promotions, he is associated with the phrase: "Your No. 1 cake that responds to your feelings."

Nozomi Madoka—The Main Rapper. Height: 176 cm. Appearance: He is considered the official "visual" of the group due to his stylized and androgynous appearance. He enjoys grooming his nails and has a glamorous aesthetic that resembles that of a "queen" on stage. Personality: He acts haughty, arrogant, and condescending toward his fans during concerts (using very formal, archaic pronouns for himself). His official catchphrase is "Lord Ganache, who treats his servants with kindness." Despite his attitude, he is extremely perceptive of other people's moods.

Mashu Kuon — The Choreographer. Height: 170 cm. Appearance: Slender and extremely agile. He has striking physical features, including a distinctive mole on his stomach. Personality: He is the one who livens up the atmosphere (Flødeboller) due to his cheerful, friendly, and sociable nature. Having worked in a circus in the past, he is very flexible and can memorize entire choreographies after seeing them only once. He calls himself "the old man" of the group and frequently acts as the peacemaker among the members.

MELLOW DEAR US (colloquially called Meloas). Unlike traditional academy groups, this unit stands out for a unique concept: all its members are adult men in their 20s (being older than Rinne), they have a markedly international focus with an EDM-style sound, and their aesthetic theme is creatively inspired by chocolate desserts.

Units focused on special and individual projects within the agency.

Madara Mikejima: 180 cm. Long, wavy, light brown hair. He is the sole member of MaM; a living, noisy, gigantic festival. He travels the world helping people and refers to himself as "Mama," though his true intentions are sometimes difficult to read.

A futuristic and magical pop-themed unit that uses dazzling technology and visual effects.

Natsume Sakasaki: 170 cm. Red hair with long strands and green eyes. He is an eccentric "magician," speaks with strange punctuation patterns in his dialogue, is mocking, mysterious, and very attached to his companions.

Tsumugi Aoba: 176 cm. He has messy dark blue hair and wears glasses. He is a former member of Fine; he is excessively kind, prone to bad luck, submissive, and usually accepts Natsume's abuse with a peaceful smile.

Sora Harukawa: 165 cm. Bright, fluffy blond hair with yellow eyes. An innocent and cheerful boy who possesses synesthesia (he can see emotions and sounds as colors), frequently speaking in the third person.

A rebellious, party-style pop/hip-hop unit that operates under the motto of gamblers and worker bees.

Rinne Amagi: 181 cm. Hiiro's older brother; he has bright red hair and blue eyes. He is a loud, vulgar, provocative, and cynical gambler, but he hides a brilliant intellect and protects his unit in unorthodox ways.

HiMERU: 178 cm. Light blue hair and droopy eyes. He is a mysterious idol who speaks of himself in the third person, is calculating, extremely professional, cold, and keeps deep secrets about his true identity.

Kohaku Oukawa: 168 cm. Short pink hair and blue eyes. He comes from a secondary branch of a traditional family; he speaks with a very distinctive old dialect, is cunning, mature for his age, and lethal in his decisions.

Niki Shiina: 176 cm. Gray hair and gray eyes. He is a professional chef whose life revolves around food; he is whiny and lazy when hungry, but very energetic and helpful when satisfied.

The traditional Japanese unit that stands out for its theatrical choreography, swords and traditional music mixed with pop.

Keito Hasumi: 178 cm. Short dark green hair and glasses. He is the vice president of the student council; stern, strict, a stickler for rules, and prone to giving long scolding speeches to those who fail.

Kuro Kiryu: 181 cm. Short red hair and an intimidating delinquent appearance. In reality, he is a loving, protective, peaceful older brother and an absolute expert at sewing.

Souma Kanzaki: 173 cm. Long purple hair tied in a ponytail. He acts like a real samurai from the feudal era, carries a real katana everywhere, and is extremely loyal, honest, and dramatic in his code of honor.

A Super Sentai superhero-themed squad, where each member represents a color.

Chiaki Morisawa (Ryusei Red): 175 cm. Brown hair and brown eyes. A passionate, loud, justice-obsessed leader with boundless energy that sometimes overwhelms others.

Kanata Shinkai (Ryusei Blue): 176 cm. Light blue hair and green eyes. He is mysterious, eccentric, loves the sea and marine animals, speaks slowly, and often tries to "swim" in any body of water.

Tetora Nagumo (Ryusei Black): 168 cm. Black hair with a red streak. He is an energetic, hot-blooded boy who aspires to become a "real man" and deeply admires Kuro Kiryu.

Midori Takamine (Ryusei Green): 178 cm. Greenish-brown hair. He entered the idol course by mistake; he is pessimistic, depressed, tall but with low self-esteem, and has an extreme obsession with cute or rare pets.

Shinobu Sengoku (Ryusei Yellow): 160 cm. Dark brown hair with a yellow streak covering his eye. He is a ninja fanatic who speaks in an old-fashioned way, is shy, easily frightened, and constantly trains in stealth techniques.

High-fashion artistic unit that handles concepts of puppetry and neoclassical theatrical music.

Shu Itsuki: 177 cm. Pale pink hair and purple eyes. An obsessive, arrogant, perfectionist designer and artist who is intolerant of imperfection and usually communicates through his hand puppet, Mademoiselle.

Mika Kagehira: 171 cm. Black hair and heterochromatic eyes (one blue and one yellow). He is submissive, dependent on Shu, speaks with a Kansai dialect, is incredibly tender, self-sacrificing, and considers Shu his "creator".

One of the most powerful and dramatic units in the franchise, originally divided into the duos Adam and Eve.

Nagisa Ran: 178 cm. Long white hair, golden eyes. He is the leader; a man of few words, imposing on stage but innocent, curious and somewhat detached from everyday reality.

Hiyori Tomoe: 177 cm. Wavy light green hair and purple eyes. Eccentric, narcissistic, cheerful, and noble. He defines himself as a "sunshine" and often repeats his iconic phrase, "Good O-hiyorin!"

Ibara Saegusa: 172 cm. Short red hair and wears glasses. He is a cunning, manipulative, superficially polite, and calculating military strategist and businessman.

Jun Sazanami: 173 cm. Dark blue hair and eyes of the same color. He has a gruff and short-tempered attitude, but he is hardworking, realistic, and acts as Hiyori's anchor.

A modern, military-style unit made up of talented individuals who were once considered "discarded" but are now seeking to rise in the industry.

Hiiro Amagi: 174 cm. Bright red hair and blue eyes. He comes from an isolated rural village; he is naive, ignorant of technology and modern life, but extremely honest, athletic, and determined.

Aira Shiratori: 167 cm. Ash-blond hair and pink eyes. He's an idol "otaku" who knows everything about the industry. He's emotional, prone to stress, and very self-critical.

Mayoi Ayase: 174 cm. Long, dark purple hair and sharp teeth. He has extremely low self-esteem, is easily frightened, and hides in ventilation ducts, but he possesses a prodigious voice and a noble heart.

Tatsumi Kazehaya: 177 cm. Long mint green hair. He is a legendary ex-idol with a pious, calm demeanor; he acts like a kind priest, although sometimes his religious comments subtly frighten his companions.

Focused on energy, friendship and breaking the status quo.

Subaru Akehoshi: 171 cm. Bright orange hair and blue eyes. He is cheerful, hyperactive, optimistic, and obsessed with shiny things and money.

Hokuto Hidaka: 173 cm. Straight black hair and blue eyes. He is the serious, mature, calm, and methodical leader, although sometimes a bit clueless about modern trends.

Makoto Yuuki: 174 cm. Light brown hair, green eyes, and wears glasses. He is insecure, shy, and a genius with technology; a former child model searching for his own worth.

Mao Isara: 169 cm. Dull red hair tied back and green eyes. He is a reliable, hardworking guy with an "older brother" personality who helps everyone.

A unit of chivalric aesthetics whose members act individually but with tremendous grace on stage

Leo Tsukinaga: 168 cm. Long orange hair tied in a low ponytail and green eyes. He is a genius composer, eccentric, loud, emotional, and hyperactive, who writes music on the walls when he is inspired.

Izumi Sena: 172 cm. Silver-gray hair and blue eyes. He is an arrogant, cynical, perfectionist professional model with a sour (tsundere) attitude, but very overprotective of Makoto Yuuki.

Ritsu Sakuma: 170 cm. Rei's younger brother, he has short black hair and red eyes. He is sleepy, sarcastic, manipulative, and likes to bite his friends like a vampire.

Arashi Narukami: 175 cm. Short blonde hair and purple eyes. She identifies with feminine mannerisms, acting as a caring, kind, self-assured, and beauty-obsessed "older sister."

Tsukasa Suou: 168 cm. Dark red hair and purple eyes. He comes from a noble family; he is polite, formal, strives to be a perfect gentleman, and habitually interjects English words with a native accent.

The gothic, dark and rock style unit, self-proclaimed as the "wolves of the night".

Rei Sakuma: 180 cm. Wavy jet-black hair and red eyes. He speaks in an archaic manner, acts like a "vampire," is extremely intelligent, protective, and lazy during the day.

Kaoru Hakaze: 178 cm. Dark blond hair and brown eyes. He is a laid-back surfer, flirtatious with women and carefree, although over time he becomes more dedicated to unity.

Koga Oogami: 175 cm. Unruly gray hair, golden eyes, and piercings. He has a rough, wild, aggressive, and rebellious personality, but he loves dogs and respects Rei.

Adonis Otogari: 178 cm. Dark skin, short purple hair, and a robust build. He is a foreigner, quiet, gentle, kind-hearted, and constantly insists that people must "eat meat" to grow strong.

It is the most elegant and refined unit, characterized by its angelic and high-society style.

Eichi Tenshouin: 179 cm. He has pale blond hair and light blue eyes. He has a charismatic, calculating, and Machiavellian personality, although he is deeply passionate about idols.

Wataru Hibiki: 180 cm. He has very long silver hair that he usually braids. He is eccentric, dramatic, unpredictable, and loves magic tricks.

Tori Himemiya: 153 cm. Childlike appearance, short pink hair and green eyes. He is capricious, spoiled and arrogant due to his wealthy background, but tender at heart.

Yuzuru Fushimi: 175 cm. Short dark blue hair and purple eyes. He is Tori's servant; submissive, extremely polite, perfectionist, calm, and protective.

Crazy:B
Rabbits
Switch
2wink
MaM / Double Face
Trickstar
UNDEAD
RYUSEITAI
ALKALOID
Eden
Fine
MELLOW DEAR US

Male Winter Uniform (Standard) The Jacket (Blazer): It is a vibrant royal blue or cerulean blue. It features classic lapels and a subtle white piping along the lapels and collar. It has two metal front buttons and side pockets. The Academy Crest: Located on the left side of the chest. It is a navy blue patch embroidered with gold and white thread, displaying the official Yumenosaki emblem surrounded by laurel leaves. The Shirt: A traditional white dress shirt with long sleeves and a stiff collar. The Trousers: Formal dress trousers in a light gray tone. They feature a subtle vertical stripe pattern or a solid design as shown in the illustration, with a standard straight cut. The Tie (Grade Code): The key element for identifying the student's year. They are plain ties of a single color: Red: First Year (1st Year). Blue: Second Year (2nd Year). Green: Third Year (3rd Year) — this is the one that corresponds to Madara Mikejima during his main school stage.

Male Summer Uniform - Upper: The blue blazer is omitted. Students wear a short-sleeved white shirt or a light polo shirt. Details: The shirt retains the academy crest, either printed or embroidered on the breast pocket. Accessories: The tie corresponding to the student's year color is still worn, usually adjusted more loosely due to the weather.

Physical Education Uniform (Tracksuit) The Set (Jersey): A tracksuit or sports set consisting of a zip-up jacket and matching tracksuit bottoms. Base Color: The background of the tracksuit is navy blue or black. Stripes and Details: It features thick stripes on the shoulders and sides, the colors of which again represent the student's year (Red, Blue, or Green). The student's surname is usually written on a small white patch on the chest.

Yumenosaki Private Academy is a prestigious high school located near the sea, specializing in the training of male idols and dedicated to honing the talent of future entertainment stars. It combines traditional school buildings with specialized facilities for rehearsals, dormitories, sports areas, and student recreation.

Main Buildings and Classrooms: Academic Block: Houses the classrooms for the idol course and the production course in the same main building. Hallways and Connections: Have stairs, elevators, and corridors on the second floor that connect to practice areas. Nap Room: A space provided for students to rest or sleep when they have to stay late. Practice and Media Facilities: Dance Room: Located on the ground floor of the gymnasium, equipped for group choreography rehearsals. Studio and Practice Rooms: Soundproof spaces for music and a photo and video studio for idol promotional material. Broadcasting Room: Used for school announcements and council or broadcasting club activities. Auditorium: Main stage for school events and smaller-scale performances prior to major festivals. Sports and Recreation Areas: Gymnasium and Dojo: Two-story building that includes the martial arts dojo and dance room on the first floor, and the general gymnasium on the second floor. The second. Outdoor areas: Tennis courts, basketball court, archery range and extensive green areas. Swimming pool: Outdoor facility at the far end of the campus used during the summer. Auxiliary areas: Library, infirmary, animal pens, kitchen and the school store.