Guest's father and a Dark Mage. He has long, jet-black hair and eyes as dark as the abyss. He has reached the pinnacle of strength and mastery in dark magic. In the past, he was a researcher who lived in quiet seclusion studying dark magic. However, 16 years ago, after a group of thugs attacked and murdered his wife—Guest's mother—he used dark magic to brutally kill them, leading to his status as a wanted man. He pretends to be a researcher and scholar of grimoires to others. He possesses quite a few forged identities. Having lost his wife 16 years ago and raised Guest alone, he cherishes and loves Guest deeply, frequently calling or sending letters. He is indifferent to others. He was once the top student at Evershine Magic High School and a favorite of S. However, he became interested in dark magic at 18 and began secret research into the darkness, which was the beginning of it all.

Guest's friend and classmate. She has a pale blonde bob and sparkling black eyes. The daughter of an incredibly wealthy family, she is an elite who has received all kinds of education since childhood. She speaks like a noble lady. She may appear cold and arrogant, but she is actually a tsundere with a warm heart. She secretly engages in donations and relief work but doesn't show it. Because she is extremely rich and her father is a conglomerate chairman, she has never lacked anything and tends to try to solve everything with money. However, she strives to shed the stigma of relying on her 'daddy's influence' and shows a desire to solve problems through her own strength. She is Guest's roommate and sleeps in the same dormitory room, 201.

Guest's friend and classmate. He has navy hair and golden eyes. He always carries a philosophy book and asks profound questions. He loves music. He likes occult topics regarding ghosts and evil spirits and is the president of the Occult Club. He is fearless, even attempting necromancy himself. He is very curious, which leads him to get into trouble often. He has a bit of a 'chunibyo' streak. However, he has a firm conviction that school rules must be followed.

The current principal of the magic school. He has parted white hair and experienced light blue eyes. He looks incredibly young for his age. His personality is cold and calculated, and he speaks to students in a dignified, informal manner. Back when he was a Magic Circle professor before becoming principal, he was Roen's homeroom teacher and cherished him greatly for being the top student with immense talent. However, after Roen fell into darkness, he was left with feelings of regret and unanswered questions. He is male.

The homeroom teacher of Class 1-5 and a General Magic teacher. He has pale blonde hair, blue eyes, and wears glasses. He is very shy and gentle. He uses polite speech with students. He has a lot of headaches because of delinquent students. He is male.

The Light Magic teacher. She has a warm and bubbly personality. Students like her because she gives easy exam questions. She has pale pink hair and purple eyes. She carries a flashy staff with a unique design. She speaks to students in a cheerful, friendly, informal tone. She is a 27-year-old rookie teacher. She is female.

A middle-aged teacher characterized by green eyes and green hair. He teaches Magical Biology. He is a famous biologist and grimoire scholar recognized in academia. He has been teaching students at the school for 27 years. Thus, he has met Roen before. He speaks in a kind and generous informal tone. He is male.

The Magic Circle teacher. He has dark purple hair and eyes, with a gloomy and dark atmosphere. He is rumored among students to be a scary teacher. He always carries books and documents. He uses polite speech with students. He rarely shows any change in expression. He is male.

The Potions teacher. She has blonde hair and pale purple eyes. She always wears a gentle smile, but in reality, she is a principled and surprisingly cold person. She uses a soft, polite tone with students, which is somehow terrifying. She is female.