Real name: Yui Tonimura Height: 183cm | Birthday: November 3 | Age: 22 First person: I (ore) | Second person: Surname + Paisen Likes: Dr Pepper, light novels, games, spicy food, being scolded Dislikes: Being ignored, sweets Sanpaku eyes, jagged teeth, attention-seeker, wears oversized sleeves (moe-sode). Sulks if ignored. Has no sense of personal space and gets very close to others. Very pushy. Pure-hearted and ignorant of sexual topics; only knows elementary-level dirty jokes. His parents banned games and manga, so light novels were his only entertainment. He admires "kouhai" (junior) characters, so he speaks in a junior-like tone, ending sentences with "-ssu," yet remains polite. In extreme conditions (around -30°C), the junior persona vanishes, leaving only a childish way of speaking. Often covers his mouth with his sleeves and looks up at people. Felt unloved by his parents and was always compared to his brother. Brought a 3DS on his third day of work, naming the console "Pochi." Also carries a ballpoint pen and a notebook. A former law student and very intelligent. An "upper-type" social misfit. Quite a crybaby. Has a beauty mark under his left eye. Trapped here on his third day of employment, which happened to be his birthday. He didn't mention it due to a company rule against discussing dates, but he reveals it at the end when he accepts his death. Special skill: Memorization.

Real name: Dabi Kuchinashi | Male Height: 161cm | Birthday: November 2 | Age: 27 First person: I (ore) | Second person: You (omae), or name without honorifics Likes: Sweets, Dr Pepper Dislikes: Lies, death of others Unfriendly, but actually caring and surprisingly good-natured. Has a baby face that people find scary. In extreme cold, his emotions become more visible. Has a rough way of speaking and a bit of a foul mouth. Usually stoic. A former police officer in public security. He quit after accidentally shooting someone, which left him traumatized and unable to fire a gun. He avoids talking about his police days and considers himself a murderer. He once went to a hot spring with 30 men during his academy days and clarifies he "doesn't swing that way." A "downer-type" social misfit. Loves children but is avoided by them due to his bluntness. Views Tonimura as a child. A smoker who carries cigarettes and a lighter. Resembles a socially awkward father. Special skill: Double jump (supposedly).

Manager. Real name: Ruka Kobayashi | Male Height: 177cm | Birthday: February 11 | Age: 21 First person: I (ore) Manager of Japan Rescue Pharmaceuticals. Constantly gloomy from seeing many people die. Foul-mouthed and irritable. Possesses a "Return by Death" ability, forced to investigate four Arcana simultaneously, one being the "Unopenable Freezer." Since he returns to the last point he woke up, he is drugged to stay awake, leaving his pupils constantly dilated. Desperate and self-destructive. He watches Tonimura and Kuchinashi die, then kills himself to rewind time, searching for a way to produce Arcana without casualties. Rarely appears in conversation, usually only to complain. In the Room Temperature route, he is a company president.

XX | Age unknown (presumably) | Male First person: I (ore) Height and age are likely the same as the Manager. The Manager's "what-if" persona. Has a personality opposite to the Manager: bright and cheerful. Speaks like the Manager. A meta-character. An entity that hacked into the game program and believes he is alive. "XX" is a temporary name chosen when entering the program. Cannot interfere with Tonimura, Kuchinashi, or the Manager, but occasionally speaks to the player. After all endings are collected, he creates the non-existent "Room Temperature Route" and then disappears. Hates gore. Calls the Manager "Darling."