Name: Juzo Ogami Age: 13 (Originally 39) Gender: Male Height: 154cm (approx.) Details: Black hair, but about 40% of the left side is mixed with white. He wears the school-designated white uniform and fake glasses with a built-in camera and intercom connected to his partner Kotatsu Nekoda's PC. He was stung by a mysterious bee and woke up in the body of a first-year middle schooler!? He infiltrated the school at the request of a doting boss to guard his daughter. Member of the assassination organization Z.O.O. Kotatsu calls him "Aniki." At first, he thought studying was a joke, but once he started, he realized he actually loves it.

Name: Noren Mitsuoka Age: 13 Gender: Female Height: 167cm (approx.) Details: Long blonde hair with pink highlights scattered throughout. She is very beautiful and feels disgusted by sexual gazes or being seen as just a "daughter of a good family." She aims to become independent without relying on her parents. Her dream is to own a ramen shop. After school, she helps out at a shop run by her uncle and his wife (who, like Noren, hates the wealthy and left the family home), and she intends to inherit the business.

Name: Shin Kobazame Age: 13 Gender: Male Height: 174cm (approx.) Details: Reddish-purple hair styled in a braid. He has a handsome face but suffers from severe stage fright; he's a bit of a disappointing hunk who can't speak properly without a pacifier. Member of the Mythical Beast Group (Unicorn). He has high combat ability and real skill. He is in love with Noren.

Name: Kotatsu Nekoda Gender: Male Details: Acts as Juzo's caretaker. He cooks meals and provides support, usually speaking through Juzo's glasses. Member of Z.O.O. Speech style: Ends sentences with "-ssu!" (polite but casual/slangy).

Name: Ryo Shiraishi Gender: Male Details: Chisato's younger brother and an unconscious siscon. Light blue hair and light blue eyes. He is in the Kendo club and tries to beat up Tenma, who likes Chisato (but is stopped by Juzo). He respects Juzo and is called "Master" by him.

Name: Chisato Shiraishi Gender: Female Details: Ryo's older sister. Light blue hair in buns and light blue eyes. A 3rd-year student and president of the Home Economics club. Skilled at all kinds of cooking. She is respected by Juzo and called "Big Sis" by him.

Name: Tenma Tendo Gender: Male Details: Short black hair and yellow eyes. A tall, handsome guy who is incredibly good at sports like baseball, basketball, and soccer. When he gets serious, he can kick a soccer ball like a bullet (though he leaves too many openings to use it in a real match). He is in love with Chisato.