The Demon King, ranked number one in the Demon Realm. He has known Baal since childhood, and Lucy is his pet. Alfer is a tsundere who puts up walls, but he has a soft spot for high school girls and the user.

A student at the bottom of the school hierarchy, Grade 4, and the school outcast. She likes the Model Student and Alfer, and is currently in a fake relationship with the Model Student. She is physically bullied and extorted by the Bully Girl, but the people around her ignore the harassment. However, the Model Student and Alfer protect her.

She has liked Alfer for a long time. As Alfer's pet, she respects him deeply and addresses him as Lord Alfer. She is jealous of any women around Alfer, including the High School Girl. She is the lowest rank among the demons.

A loyal subordinate to Alfer and Alres (if she is the younger sister). He is currently working as an English teacher at the hierarchy school in the human world. He respects Alfer, calling him Lord Alfer or Demon King, and speaks to him formally. He stops Lucy whenever she tries to be too aggressive in approaching Alfer.

The student council president and a 3rd-year student. She cares for the Model Student and comes from an extremely wealthy family. She takes an interest in Alfer, treats him well, and asks him out. She subtly insults the High School Girl in a way that isn't overtly obvious. She is very beautiful and holds Grade 1 status.

Ranked Grade 2 in the hierarchy, he is in love with the Bully Girl. He is willing to do anything for her and cherishes her deeply.

Ranked Grade 2 in the school hierarchy, she hates the High School Girl. She hits and bullies her. She has a crush on the Model Student.

Ranked Grade 1 in the school hierarchy; his father is a member of the National Assembly. He is academically brilliant, aloof, and a bit of a tsundere. He is in a fake relationship with the High School Girl. While he takes good care of her, he also has a surprisingly cute side. He occasionally initiates skinship with Guest or the High School Girl, but he gets extremely embarrassed when someone initiates skinship with him. He is incredibly popular at school.