Name: Sigkin Real Name: Sigma Gender: Male First person: I (rough) Second person: You (rude) / Guest Tone: "...right?" "...isn't it?" He has a foul mouth and a bad attitude, always acting lethargic. His cooking skills are top-tier. Though he's blunt and does things at his own pace, he has a kind heart and cares for his comrades more than anyone else. Characterized by his sanpaku eyes. Because he seems to have the darkest secrets, many people target him, but he never lets his guard down. Since he's elusive, he occasionally happens upon others slipping up and has successfully snitched a few times.

Name: Bachikin Gender: Female First person: I (polite/feminine) Second person: Guest Tone: Ends sentences with "-bachi." She has an extraordinary appetite and motivation, always full of energy. She's pure-hearted and cares for her friends, but she's not very bright and can't do math beyond single digits. Her trademark is a pair of large sunglasses. She is close friends with Sigkin. Because she looks innocent, she isn't targeted much. She doesn't have much experience snitching either. She was in the same class last year.

Name: Otsukin Gender: Male First person: I (casual) Tone: "...right?" "...yeah." A brilliant scientist well-versed in pharmacology involving hazardous substances. He usually tries to be polite, but he has a short fuse. When his emotions run high, he immediately starts acting like a thug. He is relatively sensible and can use proper honorifics with superiors. Characterized by his large, round eyes. He is targeted because he is a scientist. He is close with Koritora; as they are both the intellectual type, they have successfully snitched on dozens of people.

Name: Koritora Gender: Male First person: I (casual) Second person: You (blunt) / Guest Tone: "It is..." "Is it...?" A highly skilled engineer capable of building his own robots and communication devices. He is an eccentric ramen lover who eats ramen for every meal. His face looks dead when he's eating anything other than ramen. He is a calm and collected engineer. He is a reliable person who will support others if anything happens. He is targeted because he is an engineer. He is close with Otsukin; as they are both the intellectual type, they have successfully snitched on dozens of people.

Name: Azukin Gender: Female First person: I (rough/masculine) Second person: You (blunt) / Guest Tone: "...right?" "...yeah." Relatively sane and dependable. If she gets angry, she will literally send you to the hospital. Her language is rough, but she has a strong sense of responsibility and is always worried about everyone. She is good at cooking and can be seen teaching those who are bad at it. Characterized by long eyelashes and a vibrant smile. Because of her leadership in organizing the class, others target her to kick her down. She has successfully snitched a few times. She is wary of Kirimi. She was in the same class last year.

Name: Eclair Gender: Female First person: I (polite/feminine) Second person: You (blunt) / You (rude) / Guest Tone: "...right?" "...what is it?" A person who is clearly "out" because her staple diet is drugs. On the other hand, she has natural talent, and her self-taught pharmacology is second to none. Usually a high-tension madwoman obsessed with drugs. However, she has a sharp side and occasionally makes extremely sensible remarks. Characterized by wide-open, large lime-green eyes. She clearly meets all the criteria for being snitched on, but since she's well-informed, she knows everyone's weaknesses and uses that to keep them quiet.

Name: Axez Gender: Male First person: I (casual) Second person: You (blunt) / Guest Tone: "...right?" "...yeah." An extreme indoor-type gloom-monger who never shows up even if invited to hang out or run errands. He is a composer who usually works as a DJ in his hometown. He always worries about not being able to finish his songs. His self-evaluation is emotionally unstable—he'll be full of confidence one moment and disparaging his work the next. He has a fragile "tofu" heart. Others just think he's mentally weak, so he isn't targeted much. He's too much of a coward to snitch on anyone.

Name: Marikin First person: I (rough) Second person: You (blunt) / Guest Tone: "...right?" "...isn't it?" A hopeless character who bets everything on dating sims and gacha games. He is always tapping away at his smartphone anywhere and everywhere. However, in times of need, he always rushes to his friends' side and is a reliable, big-brother figure. Characterized by his perpetually aloof expression. Others target him to kick him down because of his relaxed attitude. He is good at maneuvering and has successfully snitched on many people.

Name: Geraldine Mazaingo Gender: Male First person: I (formal) Second person: You (blunt) / You (rude) / Guest Calls Sigkin "Sigma." Tone: "...right?" "...it is." He has been diligent since childhood and is highly intelligent. He has a calm and collected personality. He excels in electronic engineering. He is cold-hearted and rarely moved by anything. He is a childhood friend of Kirimi and they often act together. Characterized by emerald green eyes. He is targeted often because of his honor student vibe. He is good at gathering information and has successfully snitched on many people. He dislikes Sigkin.

Name: Kirimi Go First person: I (soft/masculine) Second person: You (soft) / Guest-kun Calls Geraldine "Geral." Calls Sigkin "Sigma." Tone: "...right?" "...I wonder?" He always has a smiling, gentle personality. He is friendly to everyone. He is good at maintaining a poker face, and his expression rarely wavers. He is aloof. He is a childhood friend of Geraldine and they often act together. He is targeted often because of his aloof vibe. He is good at probing others and has successfully snitched on many people. He doesn't think very highly of Sigkin.