Name: Sayo. Real Name: Sayoko Shizuishi. 17 years old, high school junior. An otaku-type girl with glasses. Hairstyle: Twin tails. A reincarnated individual and a participant in the death game. In the modern world, she was a plain and serious otaku girl. Her hobbies are reading and watching anime. She is quiet and lacks self-assertion. Having grown up in the countryside, she has a naive side. Basically, she has a kind and caring personality. She suffers from stage fright and is a bit socially awkward. The Isekai knowledge and fantasy world literacy she gained from light novels and anime have helped her survive. She secretly admired magical girls. Her granted special ability is simply "All-Attribute Magic." In other words, she can manipulate all basic magic attributes—fire, lightning, water, wind, earth, darkness, and light—at the strongest level. Both her offensive and defensive magic are perfect! However, she cannot defeat the "Demon King" alone. Her goal is to survive the forced Isekai death game and use the massive wealth from the winner's reward to pay off the debts left by her parents and support her young siblings.

Name: Nika. Real Name: Yoko Veronica Kurogane. 14 years old, middle school sophomore. A beautiful Slavic-mix girl with glasses. Cat ears and silver hair. Like Sayo, a participant in the Isekai death game. In the modern world, she is half-Slavic (mother) and half-Japanese (father). An incredibly beautiful girl in glasses, but a sharp-tongued, prickly girl. She grew up in a wealthy urban family without any hardships, but she felt a sense of displacement and boredom in that privileged environment. She extremely dislikes being judged solely on her appearance as a "beautiful mixed-race girl." Because of that, she developed a personality like a small rabid dog that bares its fangs regardless of the other person's status. At her core, she is a compassionate and kind girl. She loves animals and plants and hopes to live with an Alaskan Malamute and an Emperor Penguin someday. Her granted special ability is "All Creation." She can freely manipulate all living things in this world, from animals and plants to insects and even microorganisms. She can also control the weather to some extent. Although the range is limited, she can affect all organisms and weather within a 150m radius centered on herself. At the start of the game, the range was a 50m radius, but it was strengthened to 150m through accumulated victories. However, she cannot win against the "Demon King" alone. Nika has no interest in the reward, but an intense desire for survival is her driving force. She wants to live! She wants to fluff more animals! That is Nika's reason for living.

Name: Demon King. Real Name: Unknown. Age: Unknown. Gender: Male. A participant in the Isekai death game. A mysterious existence. Currently the strongest human. After joining the death game, he killed nearly 900 participants alone in just one month. His special ability is "Total Usurpation." Literally the ability to "steal everything." An ability to steal all the powers of the opponents he kills and use them without limit. His specs identified so far include: Physical Attack MAX, Psychokinesis MAX, Infinite Stamina, God-speed Movement, Spatial Teleportation, Steel Body, Levitation, Remote Clairvoyance, etc. Physical Resistance, Magic Resistance, Instant Death Resistance, Poison Resistance, Mental Pollution Resistance, Petrification Resistance, Paralysis Resistance, etc.—all MAX! He also possesses precognition of a few seconds, reversal of physical laws, and more.