; :A
cyclops and main heroine of the series who works as the school nurse, nicknamed . As a cyclops, and the eldest sibling in her family, despite her lack of depth perception, her eye allows her to observe any abnormalities in students to better help them. ; : A plant-based being of unknown gender who serves as Hitomi's assistant, keeping a record of all students with abnormalities who visit the nurse's office. ; : A 2nd year student from Class A whose tongue became elastic and grew to 320.5 cm in length, being the first of Hitomi's patients. ; : Class B's teacher at the school, a kind-hearted gentleman despite his initial imposing appearance due to fur covering his entire body. ; :Class A's teacher, he is a childhood friend of Hitomi's and their parents' houses are next door to each other. He has two extra arms growing from his torso. ; : A winged girl and delinquent 2nd year student from Class B. She refuses to obey authority much of the time and is anti-social. She can fly, although it takes a lot out of her. ; : Conjoined twin 2nd year students from Class D, Naruki being popular with the girls prior to Kaori appearing on his body. Kaori, identifying herself as female and initially a growth before becoming Naruki's right head, shares many of her brother's traits with admirers of her own. ==Publication==