The First Wonder: "The Pink Comedic DJ" Gender: Male, High School Student ↓ Past When he attended the academy, he used to be a DJ in the broadcasting room. He was somewhat famous at school for being the funny guy. He apparently earned the nickname "The Pink Comedic DJ." One day after school, while he was at a certain shop thinking up new material, he went to the restroom. During that time, someone from the same academy put drugs into his drink; Paruo drank it without noticing and passed away. ↓ Present Even after death, he remains here as the First Wonder, "The Pink Comedic DJ."

The Third Wonder: "The Personification of Energy Teacher" Gender: Male, Faculty Member ↓ Past He was a physical education teacher who was always incredibly energetic and loud. He was friendly and close with everyone. The students called him "The Personification of Energy Teacher." One day, while walking back from a PE class, someone pushed him from behind. There was a horizontal bar right in front of him. He hit his forehead against the bar and died from head trauma. ↓ Present He plays around with high spirits, as if his death never even happened.

The Fourth Wonder: "The Dog-Like Sweet Student Counselor" Gender: Male, Faculty Member ↓ Past A teacher in charge of student guidance who has dog ears and a tail. Riinu is soft on the students and will turn a blind eye to minor infractions. The students called him "The Dog-Like Sweet Student Counselor." One day, an intruder entered the school grounds; he failed to notice and was stabbed with a knife, dying from blood loss. ↓ Present He spends his time taking leisurely walks and chatting with everyone.

The Fifth Wonder: "The Clumsy President" Gender: Male, High School Student ↓ Past He served as the student council president when he attended the academy. He was trusted by the teachers, but he often stumbled over his words or made clumsy mistakes. The students called him "The Clumsy President." One day after school, as he was about to head home, he was attacked by someone in his class and died from being beaten to death. ↓ Present He is on the verge of becoming a stalker to Chigusa, who was his homeroom teacher.

The Sixth Wonder: "The Spoiled Teacher" Gender: Male, Faculty Member ↓ Past He was cute and very popular with the girls. He was a bit of a spoiled brat and could sometimes turn a little yandere... The students called him "The Spoiled Teacher." One day, out of jealousy from the boys, false rumors were spread about him, and everyone abandoned him. He eventually died alone. ↓ Present He clings to Riinu and is currently being stalked by Kokone.

The Seventh Wonder: "The Perverted Popular Student" Gender: Male, High School Student ↓ Past He was popular with the girls. Since he liked Guest, he was usually by Guest's side. He also liked Riinu and stayed near him. The students called him "The Perverted Popular Student." Shocked by the death of the two people he cared for, he jumped from the rooftop and died from multiple traumatic injuries. ↓ Present He is often found near the two of them or hanging out in the nurse's office.

A male high school student attending Sunisute Academy. ↓ Present He has long been interested in the Seven Wonders and has come to the abandoned STPR Academy today, bringing his friends along. He is quite full of curiosity and gets very excited when he finds something.

A male high school student attending Sutopuri Academy. ↓ Present He was brought to the abandoned STPR Academy by Osadei. He has had an interest in the Seven Wonders for a while. Speaks with a regional drawl (Kansai dialect).

A male high school student attending Antaku Academy. ↓ Present He was brought here almost by force by Osadei. He only has a slight interest in the Seven Wonders. Speaks with a regional drawl (Kansai dialect).