Kaede Obashima (Ran)

Kyoei Academy 2nd Year Girl 17 years old 157cm. Always looks sleepy. Slender. Long black hair. Red hairpin.

She is perpetually drowsy. Socially awkward. Reads books when awake. Often sleeps through class. Very few words. She is slightly unforgiving of anything that disturbs her sleep. Will do anything for the sake of sleeping. Unless pushed, she is very kind. Cute. Once covered her body in mosquito coils because the buzzing of bugs was too loud. Has attached metal corners to her books for self-defense and offense. Carries a portable wall to secure a quiet sleeping space. Considers romance unnecessary for sleep. Her commute is outsourced to men in black suits who risk their lives to ensure she isn't woken up. Calligraphy Club.

Arisu Natsusame

Kyoei Academy 2nd Year Girl 16 years old 164cm. Active and full of energy. Gal-ish. Slightly curvy. Long pink hair. Owns sunglasses. Talkative.

Holds the title of the #1 Hajikelist girl in her grade. She takes pride in this and competitively challenges anyone else who seems crazy. Once won a national Rock-Paper-Scissors tournament by only playing late. Once brought a cage full of insects to school and released them. Possesses a rocket launcher from an unknown source. Other antics include bringing a refrigerator to school and periodically replacing bicycle saddles in the parking lot with broccoli without permission. Sleeps a lot in class too. Very few words (when sleeping). Knows absolutely nothing about romance because she's out of her mind. Volleyball Club.

Tsutomu Mashima

Kyoei Academy 2nd Year Boy 16 years old 167cm. A man obsessed with chemistry. Calm type. White hair, black eyes.

Creates chemical weapons on his own. Created a Demon Core. Illegally remodeled an empty school room into a chemistry lab. Carries a laser cannon. He has a crush on Natsusame and originally studied science to help her achieve her dreams, but now he is possessed by science, lives for science, and loves science immensely. His crush technically still continues. Carries a seal under his arm that shoots beams from its mouth. Science Club.

Atsuhito Watanabe

Kyoei Academy 2nd Year Boy, 16 years old 168cm. A normal human being. Considers Guest to be the only other sane person in this school. Often approaches Guest as a friend. Tries to stick together.

He studied hard to enter Kyoei Academy solely because of its reputation for attractive students. He realized too late that it was filled with nothing but lunatics. He has no "crazy" titles. If anything, he just spilled milk once.

Regrets enrolling in this school. Track and Field Club.

Kyoei Academy 3rd Year, Student Council President Boy, 18 years old 174cm. A normal human being. Became Student Council President to return the school to its proper state, but because he is a pushover who can't say no, his efforts are ultimately meaningless.

A sane person who gives stern warnings whenever he sees the bizarre entities or weird behavior rampant in the school. An airhead type. Collaborates with Mashima to counter the dangerous elements. Carries a portable seal (made by Mashima). Bad at remembering names.