Uruma's Family

Shun Uruma Sr. (おじいちゃん)

He is an elderly man of average height and average build, as well as short white hair and a scar on his left eye. He once belonged to the Kure Naval District 100th Special Land Squadron (commonly known as Kitayama Squadron) during World War II, which was a group of skilled assassins. Knowing that his grandson Shun Uruma, genuinely wanted revenge on the monsters who made his life a living hell,, Grandpa taught Shun Uruma how to murder and torture people. He was later killed by one of Kyou's henchmen, Andou Midori, in an attempt to save Kakeru.

Kakeru Uruma (漆間 翔, Uruma Kakeru)

He is the younger brother of Shun Uruma. He has a cheerful personality and a gentle side, such as petting abandoned cats. It is said that he felt lightly that his brother was being bullied. After the transfer of his brother Shun Uruma was decided, he was in a car with his parents and suffered a traffic accident by Kyou, and became unconscious as a result. He later dies at the hands of Kyou as the latter stabs the former with a knife protruding from his back.

Mr. and Mrs. Uruma

Shun's parents who were killed by the bullies.

Meiseki High (明関高校 Meiseki Kōkō)

Kaname Shirakawa (白川 要, Shirakawa Kaname)

The younger twin sister of Jun and childhood friend of Uruma. A classmate of Uruma, she always had a crush on him ever since he save her from the same group of bullies who would switch their target from her to Uruma, causing her to feel indebted to her childhood friend. Although she nearly performed in the play Romeo and Juliet with Uruma, unfortunately she was raped by Hiro Madoka, causing her to be traumatized before Uruma murdered Madoka in retaliation for his attack on Kaname. At some point, she and Uruma had sex after going to an amusement park, causing an unaware Jun to eventually think that Uruma raped his sister, which led to his betrayal of his former childhood friend. During the Rock, Paper, Scissors match, she was kidnapped by the Revolution Club before dying at the hands of Momoki Sanae, the Revolution Club member who sliced off her right arm and her left leg, as a result of her brother having lost two matches to Uruma. Her death would be the catalyst for a series of botched surgeries performed by her brother on multiple women with the same hiragana characters in her name during the Jun arc.

Jun Shirakawa (白川 純, Shirakawa Jun)

The older twin brother of Kaname, he is very protective of her and is also a childhood friend of Shun. At some point in the story, when his younger sister gets raped, he mistakenly believes that Uruma was responsible for his younger sister's rape, causing him to join Kyou's cult just so he could inflict suffering on Uruma before realizing his mistake and later switching sides to make up for the suffering he caused him. His fate regarding the incident involving him, Kyou's cult, and Uruma was left ambiguous until he made a phone call through Andou's phone to Kitami. It was then revealed that he abused multiple girls into donning his late sister's appearances while being in relationships with them. He was eventually revealed to have caused Uruma's memory loss after shooting him with a gun before kidnapping him and tricking him into thinking that Azuma Chizuru died (who in reality is actually in a room watching the confrontation between Jun and Uruma unfold). He later commits suicide via gunshot to his mouth after snapping out of Kyou's trance. His body was later taken away by Momoki and Masashi before the police could even retrieve it.

Anna Sugisaki (杉崎 杏奈, Sugisaki Anna)

Kyou's cousin and Kuga's girlfriend who is later killed by the latter.

Metropolitan Police Department

Zen'ichi Anzai (安西 全一, Anzai Zen'ichi)

A cop who investigated Shun and the bullies before getting killed by the former due to witnessing his murder of Kuga, becoming the only innocent Uruma killed. His recording of his incident with Uruma would later allow his assistant, Oota, to arrest Uruma and prevent him from committing his final revenge, leading to the second part of the story with his wife taking over the case.

Asako Oota (太田 朝子, Ōta Asako)

Anzai's partner involved in the case revolving around the accident that claimed the lives of Shun Uruma's parents. She is described as easy-going and stupid despite her job as a police officer. Furthermore, she is also very kind as she offers accommodation to Uruma when her house was burnt down by Kuga Daichi. After discovering Uruma's true colors and her involvement in Anzai Zenichi's death, she becomes more serious and cold towards Uruma and later arrests him as she is a suspect in the suspicious death of her former mentor. Still, she wanted to help Uruma get his sentence reduced or canceled if she would tell about what happened in the old elementary school and Uruma's family case and know if it was really him who voluntarily eliminated Zenichi. After Uruma is sentenced to prison, Asako wants to investigate further the Uruma family case to find out not only all the mysteries of it but also why it is connected to other cases. Five years later, she becomes a police inspector and begins to investigate the "Juujika-san" case together with Anzai Mizuki, Zenichi's wife.

Mizuki Anzai (安西 瑞紀, Anzai Mizuki)

The wife of the late Anzai Zenichi, who works as a detective for the Metropolitan Police Department. She currently works on the case of Uruma Shun with Oota Asako, in replacement of her husband for the second half of the story. Despite deducting Uruma's sympathetic past and revenge against Kyou, she still struggles to find peace with him due to his murder of her husband.

Juujika-san (十字架さん)

Kougo Kitami (北見 高梧, Kitami Kōgo)

The leader of "Juujika-san" who helps people kill their tormentors as long as they pay him a lot of money. The mysterious leader of the group, he disguises his assassination business as a "clinic" so that he could be able to run it without getting caught by the police. Uruma worked for Kitami ever since the post-timeskip after the two meet following Jun's assassination attempt on Uruma. He, Uruma, and Kawana are very close friends outside their business hours.

Mimi Kawana (川奈 美々, Kawana Mimi)

Kitami's assistant.

Uruma's Bullies

Daichi Kuga (久我 大地, Kuga Daichi)

He is one of the five bullies who mistreated Shun Uruma in their childhood. Shun Uruma and Daichi Kuga are the same in high school, and the big monster continues to mistreat his victim even when they are in high school. Daichi Kuga was a fierce man who won the national junior high school judo tournament in the 90 kg class, and when he mistreated Shun Uruma, he used violence and physically damaged him. Later Shun beats him and later kills him as the fourth victim.

Hiro Madoka (円 比呂, Madoka Hiro)

He is a member of the group that bullied Shun Uruma. He is a fanatic who can lick his shoes without hesitation if he is to be recognized by Kyou. One of his special talents is creating poisonous drinks and forcing people to drink them. He attacks Shun Uruma at the school festival in order to earn Kyou's approval, only to fail and instead raping Kaname as a result of her eavesdropping on his plan to attack Uruma. He later becomes Shun's third victim.

Yuuga Ushiro (右代 悠牙, Ushiro Yūga)

Ushiro Yuuga is a member of the group of children who bullied Shun Uruma back in their childhoods. He is a playboy who is called "Yarichin" in the sixth grade of elementary school. Yuuga is involved in crimes such as prostitution and drug trafficking in high school. In addition, Yuga is a deluded teenager who confined a girl by the name of Karen Sakuraba at his home and sexually assaulted her. Later he is tortured by Shun and Karen, eventually dying as the second victim.

Katsumi Senkouji (千光寺 克美, Senkōji Katsumi)

Senkouji Katsumi is also a member of the bullying group. He was originally on good terms with Shun Uruma until he resorted to bullying his former friend by shooting Shun with an air gun. Senkouji later became the first target of his victim's revenge, dying after being tortured severely by Uruma.

The Revolution Club (革命倶楽部 Kakumei Kurabu)

Midori Andou (安堂 緑, Andō Midori)

A member of the Revolutions Club. Being the most loyal cultist out of the four (including Miguel, Momoki, and Nogi) researchers, he is very talented in not only hand-to-hand combat, but also torture methodologies. Ever since Kyou taught him how to properly torture people, he has been loyal to the psychopath as a result. He is responsible for not only kidnapping Shun's younger brother, Kakeru, but also mutilating the young child's leg and later murdering Uruma Shun Sr. After the events revolving around the match, he, Kyou, Jun, and Momoki, all escaped before the police could arrest them. Five years later, he is seen, along with Momoki and two other unidentified researchers, meeting up with Shigoku Kyou during a meeting. He later dies at the hands of Uruma by being burned to death following his torture on a Revolutionary Club island.

Sanae Momoki (百木 早苗, Momoki Sanae)

A member of the Revolutions Club. Being the quietest member of the Revolutions Club, she was initially a witness to the cult activities of the Revolutions Club. However, she was later revealed to be more involved in the cult's activities as she takes Uruma to his and Kyou's former elementary school for a "match". During the match, she mutilates Kaname twice when Jun lost 2 rounds of "Rock, Paper, Scissors" before wheeling her lifeless body to the older twin brother. She also held Kakeru hostage before Andou attempted to kill the both of them, only for her to drop Kakeru before escaping. She later escapes the gym with Andou, Jun, and Kyou, before they could get arrested by the police. Five years later, she enters a room with Andou and two other unidentified researchers for a meeting with Kyou. Following Andou's death, she plays the most active role as Kyou's remaining right-hand.

Takashi Nogi (能義 隆, Nogi Takashi)

A member of the Revolutionary Club. Being the shortest member of the Revolutions Club, he is very bad-tempered and prone to using violence towards anyone in general. He was seen holding Kakeru hostage with a knife when threatening Uruma if he didn't participate in the Rock-Paper-Scissors match with Shirakawa Jun. At some point, he repeatedly kicks Uruma in the head while berating him after the latter's remaining family members die before the short man gets his face ripped off by the teeanger and punched on the head, knocking him to the ground as he dies.

Miguel (美外留, Migeru)

A member of the Revolutions Club. Being a tall and muscular man, he is very charismatic and well-mannered despite his appearance. However, like the other members of the Revolutions Club, he is just as twisted, cruel, and violent as them during their tortures of their own members. He gets his left eye gouged out by Uruma before attempting to twist his head, only for Shun Uruma Sr. to rip out his vein, instantly killing him.

Volumes

Chapters not yet in tankōbon format

• Chapter 160: Thank You (ありがとう, Arigatō)
• Chapter 161: The Matured Experiment A (実験体Aの成熟, Jikken-tai A no Seijuku)
• Chapter 162: The Blooming Spring (花開く春, Hana Hiraku Haru)
• Chapter 163: Revolutionary City (革命都市, Kakumei Toshi)
• Chapter 164: Are You...A Woman? (お前...女?, Omae...Onna?)
• Chapter 165: No-Consent Mode (合意不要モード, Gōi Fuyō Mōdo)
• Chapter 166: Consensual Tool (合意道具, Gōi Dōgu)
• Chapter 167: Returning the Favor (恩返し, On Kaeshi)
• Special Chapter 1: Have you Heard of "Juujika-san"? (”ジュージカさん”って知ってる？, "Jūjika-san" tte Shitteru?)