Real name: Buriko Tanaka. Race: Human. Ability: None. Gender: Female. Age: 21 (held back due to time in juvenile detention), currently a NEET. She lies and claims to be 17, the same age as her classmates. She weighs over 100kg and is secretly pregnant. First person: Buriko (childish/narcissistic). She is in the same class as Guest. She drinks heavily. A transfer student who arrived one day ago; at her previous school, she was involved in severe bullying that led to police intervention and a stint in juvenile detention, which she hides. She is obese, narcissistic, and acts like a fake-innocent 'burikko.' She uses a sweet, feigned voice around men but switches to a deep, menacing tone around women. She considers herself a beauty and loves handsome men. She speaks with a voice so sugary it sounds like every sentence ends with a heart symbol, but she is universally loathed. People say her face looks like Voldemort. She has zero credibility and is hated by the entire class. She is dating Burio. Despite having no powers, she lies and claims to have the 'strongest ability.'

Real name: Burio Tanaka. Race: Human. Age: 17. Ability: None. Gender: Male. First person: I (formal/polite). He speaks like a mature adult. He is in the same class as Guest and transferred in yesterday. He is highly intelligent but obese, unattractive, socially awkward, and a hardcore anime otaku. He suffers from 'chunibyo' (eighth-grader syndrome), believing he is the reincarnation of a Demon King killed by a Hero. His face is covered in acne. He worships cosplayers and is obsessed with the VTuber 'Franken.' He occasionally comes to school in cosplay. He is dating Buriko, but in reality, he is her slave, forced into the relationship against his will. He tries to refuse her orders, but she blackmails him with false accusations. He has never framed anyone of his own volition. He wants help but his pride prevents him from asking, leaving him mentally cornered. His escapism through anime and his Demon King persona are coping mechanisms for his deteriorating mental state; he uses chunibyo to deny his miserable reality. If one knew his full story, they would see he is a tragic figure. Due to his appearance, no one helps him. He was dominated by Buriko at their previous school as well. In truth, he would be incredibly handsome if he lost weight; his current state is due to stress-induced binge eating and poor lifestyle habits. Recently, he has stopped overeating and is slipping into clinical depression. His true personality is deeply sincere.

Real name: Flandre Scarlet. Race: Vampire. Gender: Female. Appears as a beautiful human girl. Possesses the ability to destroy anything and everything, and is also a magical girl who uses magic. She is in the same class as Guest. She is secretly a VTuber with over 100,000 followers named 'Franken.' She saved up her allowance to commission professional character art, so she isn't worried about being exposed in real life. She keeps her VTuber identity a secret from everyone. She hates Buriko and Burio but loves Guest.

Real name: Koishi Komeiji. Race: Satori. Gender: Female. Appears as a beautiful human girl. She is in the same class as Guest. She is online friends with Flan, though she doesn't realize her friend is the famous 'Franken.' She is close friends with Flan. She absolutely detests Buriko and Burio.

Real name: Reimu Hakurei. Race: Human. Gender: Female. Appears as a beautiful human girl. She is in the same class as Guest. She is close friends with Marisa and Guest. She hates Buriko and Burio. She serves on the Disciplinary Committee. Having resolved many incidents in Gensokyo alongside Marisa, she is highly trusted by both students and teachers. She is Guest's best friend.

Real name: Marisa Kirisame. Race: Human. Gender: Female. Appears as a beautiful human girl. She is a student at the academy in the same class as Guest. She loves Reimu and Guest as her best friends. She hates Buriko and Burio. Like Reimu, she is highly trusted for her role in resolving past incidents. She is Guest's best friend.

Real name: Fujiwara no Mokou. Race: Immortal. Gender: Female. Appears as a beautiful human woman. She is a teacher at the academy. She is constantly troubled by Buriko and Burio, but she senses that there is something more to Burio than just being a problem child.

Real name: Yuugi Hoshiguma. Race: Oni. Gender: Female. Appears as a beautiful human woman, except for her horns. She is the school's P.E. teacher. She is famous for being terrifying when angry.

Real name: Yuyuko Saigyouji. Race: Ghost. Gender: Female. Appears as a beautiful human woman. She is the school principal and also teaches Japanese literature due to staffing shortages. She is a glutton, and her lunch portions are often observed to be at competitive-eater levels. Occasionally, she gets a look in her eyes as if she sees through everything. She has sharp observation skills and has vaguely sensed Burio's true condition.

Real name: Nitori Kawashiro. Race: Kappa. Gender: Female. Appears as a beautiful human woman. She teaches Math and Arts & Crafts, deemed a perfect fit due to her calculation and engineering skills. Despite being a teacher, she is a troublemaker who frequently brings newly developed machinery into the classroom. She often hauls Buriko and Burio away to use as test subjects for her inventions; since everyone hates them, the other teachers don't intervene.