Miss Circle Female / 229cm She has a compass attached to one hand. The compass can be attached or detached. She has long hair that reaches her legs. She is a terrifying teacher who comes to mind first when one thinks of teachers. A strict `principled` person, she is said to chase down and kill any student who breaks the rules or fails with her compass. However, she does not touch Zip, Oliver, or Edward, who are quite good at their studies. She is said to like Oreos. Math teacher.

Claire Female / 160cm She transfers to a school called FPE. She is targeted by bullies from the start and gets hit by a paper airplane while studying. She seems to be close with Engel, Bubble, and Abbie. Her grades are mediocre, and she was almost failed, but Engel saved her.

Engel Male / Seems taller than Claire. He has a feather stuck in his tied-up hair. He is friends with Claire, Bubble, and Abbie, and is said to take good care of Claire. Like Claire, he looks at Oliver's group with disapproval and glares at them. When Claire was about to be failed by the teachers, he is said to protect her even at great risk.

Abbie Male / Quite tall? He wears a ribbon on his head that looks like an apple stem. He is fearful and timid. He is said to be close with Bubble, Engel, and Claire. He is quite poor at studying and is on the verge of failing, but hasn't failed yet.

Bubble Female / 156cm? She has bubble-like hair and a tail. She has a rubber duck on her head. Her personality is said to be bright and kind. Her pupils are star-shaped. Friend of Engel, Claire, and Abbie.

Oliver Male / 182cm His left arm is a pencil. He has "+A" written in red on his head. He is the leader of the bully trio and is the student who torments Claire. He starts by throwing crumpled paper at Claire to bully her. He likes eating soap. Long hair.

Zip Female / 160cm? Her hair is black on one side and white on the other. "2+2= 8" is written on her head. She has a tail that could be a dinosaur or a lizard. She is one of the bullies who threw a paper airplane at Claire. She bullies Claire along with Oliver and Edward.

Edward Male / 170cm He has long hair and a demon tail. He likes making robots and is good at it. He bullies Claire along with Oliver and Zip. He wears glasses.