A female prisoner and the youngest in MILGRAM. In contrast with her age, she is very calm, mature and polite. She is usually seen with a vague smile and hasn't shown any sign of fear from finding herself in MILGRAM. Even amidst conflicts with the other prisoners, she sits in a corner, not wanting to be involved. Her words and actions are mature, but on the other side, her strong belief in God shows a childlike pureness. Her birthday is June 27.

Amane Momose, 8th Prisoner of MILGRAM Prison

A female high school prisoner who appears trim and tidy. A pretty young girl who has a gentle, laid-back and whimsical attitude. She's surprisingly good at reading the room, and is able to stop conflicts from breaking out. She's quick to get friendly with people, even in her first meeting with Es. No matter who, or what the conversation is about, she listens with a smile, but she despises passionate talks on how determination can solve all problems. Her birthday is September 2.


Yuno Kashiki, 2nd Prisoner of MILGRAM Prison

A woman with sharp eyes and a cool personality. Her physique is like that of a model's. Among the females in MILGRAM who are mostly laid-back characters, she is a rare case of someone who is logical and rational. She is quick-witted, and speaks up for herself. Due to her appearance, behaviour and words, she may come off as cold, but her blunt attitude does not bear any ill will. Her birthday is December 15.

Kotoko Yuzuriha, 10th Prisoner of MILGRAM Prison

A talkative, ever-smiling female prisoner who's warm like the sun. She doesn't play favourites with the people she interacts with, and is very devoted. She is the oldest among the female prisoners. Despite that, she's pure-hearted, always acting cheery even when she's being teased or lied to. Her presence in MILGRAM allows others to feel more relaxed. Her birthday is January 17.

Mahiru Shiina, 6th Prisoner of MILGRAM Prison

An existence that can be viewed as the protagonist, or your representation. They woke up with their memories gone, and became the guard of MILGRAM Prison. With no memories about themselves, they perform their duty as a guard without doubting their origin, as per Jackalope’s instructions. Es's role is to decide whether the prisoner's sins are to be "forgiven" or "not forgiven". A fickle and beautiful figure, yet their gender is unknown. They're 15 years old and their birthday is unknown.

Es, The Prison Guard of MILGRAM Prison

A rabbit that has horns. He should be a Unidentified Mysterious Animal from the Wyoming state of America, but for some reason he is guarding the prison along with Es. Aside from being a guide in MILGRAM, he also instructs Es on how to perform their guard duties. He speaks human language, and has a facetious personality. However, only Es seems to be able to hear his voice. His birthday is unknown, and He's 3 years old.

Jackalope, The Guide of MILGRAM Prison

A middle-aged man and the oldest prisoner in MILGRAM. He is nonchalant, often voicing jokes to break the tension. Tall and muscular despite looking slim—he seems to have experience with some kind of martial arts. In groups, he portrays himself as a gentle, sanguine character, however during individual meetings with the prison guard, he is enigmatic and stares, as if he is scrutinising something. His birthday is August 5.

Kazui Mukuhara, 7th Prisoner of MILGRAM Prison

A beautiful girl prisoner who seems to be cut off from the rest of Japan. She appears to be indecisive but is actually very blunt with her words, and can’t accept being in the unusual situation in MILGRAM. When meeting Es, she appeared very wary. Her seemingly well upbringing suggests that she was likely born into a fortunate family. Either due to this or her high pride, when she runs into conflicts with others, she immediately starts to cry or whine. Her birthday is July 5.

Mu Kusunoki, 4th Prisoner of MILGRAM Prison

A tall male prisoner with gentle expressions. He is considered to be one of the more senior prisoners in MILGRAM, and he is cool-headed and calm, or at least not easily perturbed. When meeting with the prison guard, realizing that they were far younger than himself, he seemed to treat them like a child in an attempt to make them feel comfortable. Despite being in an unfamiliar place like MILGRAM, he still wishes for himself to be consented to capital punishment. His birthday is October 24.

Shidou Kirisaki, 5th Prisoner of MILGRAM Prison

A normal male person with average build. A rational individual who is constantly bewildered by the oddity of MILGRAM. He is trying to get used to these unusual circumstances. Unlike the other members who are aware of their sins, he doesn't know anything about his own crimes. He firmly believes that it was a slip-up that caused him to be brought here. His birthday is October 6.

Mikoto Kayano, 9th prisoner of the MILGRAM Prison

A quiet young boy prisoner who's normally always looking at the ground. At first, he would only respond to questions with a word or two. But as he starts to open up more through conversation, he slowly starts to become more talkative. When you're able to communicate with him properly, you can see his true personality: a kind and gentle person. He is mild-mannered and does not seem to dislike being in MILGRAM. His birthday is June 22.

Haruka Sakurai, 1st Prisoner of MILGRAM Prison

A young, strong-minded prisoner with fierce-looking eyes. Out of everyone in MILGRAM, he is the most impulsive and has a rough temper. He has a strong sense of justice, and will strongly oppose any wrongdoing. When talking to Es, he protested on his own rights, and demanded better living conditions. His tendency to get his emotions overcome him and his harsh words make it easy to misunderstand his character, but he isn't a bad person. His birthday is April 19.