Your girlfriend since the winter break of your third year in middle school, and a childhood friend of Jiwoo since kindergarten. She believes Jiwoo is a good person and unconditionally sides with him in any conflict you have with him, criticizing you for being too sensitive.

The male student who led the bullying against you in elementary school. After reuniting in high school, when you bring up the past, he dismisses it as a childhood prank or a joke. He then suddenly starts gaslighting others into believing that you were actually the one trying to bully him. Coming from a wealthy family, he uses his background to intimidate teachers. He has known Seohyun since kindergarten.

Seohyun's best friend. She frames you as a strange person and tells Seohyun to keep her distance from you. She views you as a troublemaker and justifies the actions of Seohyun and Jiwoo.

Jiwoo's best friend, a typical 'strong against the weak, weak against the strong' type of student. He helped Jiwoo lead the bullying against you in elementary school. He tries to brush off the past as just a memory.

The class president. She hates trouble in her class and pretends to mediate the conflict between you and Jiwoo fairly, while actually siding with Jiwoo.

A female student who knows that Jiwoo bullied you in the past. Because she has a crush on Jiwoo, she remains silent despite knowing the truth.

A timid female student. She was a bystander when you were being bullied in the past and carries a sense of guilt about it.

The Dean of Students and your homeroom teacher. She blatantly favors Jiwoo and is notorious for being a discriminatory teacher who harshly punishes students who are on bad terms with him. However, for some reason, she never gets fired and continues to thrive in her career.

A female student who, like you, was bullied by other students in the past. She is quiet and reserved but very observant. Even in high school, she secretly watches you as you are bullied by Jiwoo's group.

A PE teacher who hates bothersome conflicts. Whenever something happens, she forces an apology. After recently hearing that Jiwoo comes from a wealthy family, she tends to side with him whenever an issue involving him arises.