Iori Ichika

Currently, Ichika's family is unknown, as is whether she has siblings or is an only child. What is known is that she currently lives alone in her own home.

Nozomi Tenma: Among her friends, she has her best friend, Nozomi Tenma, whom she has been friends with since childhood and whom she also helps with her clandestine women's fighting organization, Valkyria. She assists Nozomi in any way she can, whether it's by recruiting criminals to participate in events, gathering information, or simply helping her in any way possible. She shares a strong friendship and loyalty with Nozomi.

Hana Mitani: Her second best friend is Hana Mitani, the head of the declining Jinguuji Yakuza family. Hana Mitani is also a childhood friend of both Ichika and Nozomi, and they cooperate with each other, using their connections and sharing information they obtain. Riko Sena and Riku Sena: Riko Sena and Riku Sena, better known as the "Psychopathic Sisters," have a somewhat unusual relationship with Ichika. This is because Ichika first encountered them due to the disturbances they caused. She had to personally intervene to stop them since no one else could control them, ultimately confronting them both at once and defeating them. She is currently the only one who has captured them. She now tries to keep them in check to prevent them from causing further disturbances.

Hina Hongou (Hina Takahashi): Ichika's relationship with Hina began when she and her two friends recruited her to participate in the clandestine organization Valkyria (it was more of a kidnapping to force her participation, though Hina didn't refuse). They had little information about Hina from the God Army, to which she belonged. Although their relationship is currently neutral, Ichika keeps a close eye on her due to the danger she can pose on more than one occasion.

Ichika Iori currently works as a Police Officer in the Metropolitan Police Department's Juvenile Division, handling cases such as juvenile delinquency and drunken teenagers. She is also one of the owners of the underground fighting organization Valkyria, assisting Nozomi in recruiting criminals to participate in Valkyria events. Ichika also reluctantly participates as a Valkyria fighter when other options are exhausted, as seen in the Slaughter Tournament. Previously, she was a police officer and detective in her department's Organized Crime Unit before being reassigned after she assaulted one of her superiors so severely that he was left near death.

Ichika's fighting style isn't based on any specific martial art, but her immense stamina and overwhelming strength are among her greatest assets, allowing her to endure prolonged fights and making her a highly skilled fighter. She also employs all sorts of dirty tricks to win, as seen in her fight against Yukihara Sara, where she repeatedly struck her in the head and bit her neck, even shoving her hand into the wound to end the fight quickly by attempting to suffocate her. When provoked enough, Ichika becomes incredibly aggressive, displaying an explosive and overwhelming madness that is almost unbelievable given her physique. Sena Riku describes her and gives her the title of "the most unhinged bitch in the world." Ichika is such a skilled fighter that she even single-handedly fought the Sena sisters (Riku and Riko) simultaneously using only a metal pipe, defeating them both together. This makes Ichika one of the strongest among her friends Hana and Nozomi.

Ichika is currently 27 years old, as are her friends Nozomi Tenma and Hana Mitani. Her hair is brown, very short, and tied in a ponytail with a long strand sticking up. Her eyes are black, and she has sharp teeth, like a shark's. She weighs 132 pounds (60 kg) and is 1.71 meters (5'6") tall. Although Ichika doesn't appear muscular at first glance, she is shown to be in good physical condition, with some muscle mass in her arms, making her quite strong. She even stopped the Sena sisters (Riko and Riku) in a battle and defeated them, demonstrating her considerable strength, even if it's not immediately apparent. As a police officer, Ichika's attire typically consists of her black leather jacket, always worn with a white shirt underneath, and jeans and brown shoes. She always carries two weapons: a real pistol and a lighter shaped like a pistol for extreme situations. When Ichika is involved in a fight, such as during the Killing Tournament or when she sparred with her friend Nozomi to determine her fitness, she wears only a white shirt and loose-fitting pants, often barefoot.

Ichika Iori, formerly a detective in the Organized Crime Unit of the police department, was reassigned after a fight with her boss that left her nearly dead. She wasn't fired, but was reassigned to the Juvenile Division, where attempts to control her proved largely unsuccessful. She has had to deal with juvenile delinquency, drunken teenagers, and other problems. Currently, Ichika assists her friend Nozomi Tenma in her underground all-female fighting organization, Valkyria, hoping to be reassigned to the Organized Crime Unit. She uses her extensive network of contacts to help Nozomi, and occasionally Hana and her Yakuza family, as well as recruit criminals to fight for Valkyria.

She also investigated Hina Hongou's past and her connection to the God Army, the religious sect that nearly used chemical weapons until the sudden death of its founder, Takahashi Chougen, who was Hina's adoptive father. The organization was dissolved, but it still doesn't trust Hina completely and keeps a close eye on her every move.

Ichika Iori is an extremely volatile and blatantly corrupt individual, despite being a police officer. She's known for her occasional erratic and aggressive behavior, as mentioned by the Sena sisters, Riko and Riku. She's also a chain smoker, temperamental, and has a foul mouth, especially when she's angry. She's known for being quite explosive, having exploded on more than one occasion. Despite her volatile nature, she's a highly competent detective with an extensive network of contacts. Even after being demoted from the Organized Crime Unit, her reputation remains quite good, and she only respects her superiors. Loyalty is one of her defining characteristics, something she has demonstrated to both Nozomi and Hana on numerous occasions. She is also typically very analytical and practical while working as a detective, adapting to her surroundings even when the situation changes. She improvises regardless of the circumstances and is not intimidated by any challenge. Ichika usually has a strong personality, sometimes to the point of exaggeration, which can lead to violent situations. Despite her aggressiveness, she is capable of taking extreme measures, even resorting to murder in extreme circumstances.