Friendly Rivalry

After living in an orphanage, Woo Seul-gi transfers to a top-ranking school hoping to find her father — and soon catches the eye of a popular student.

Facing a heartbreaking discovery, Seul-gi struggles to adjust to her demanding schoolwork, while her background makes her a target of bullying.

Yu Je-i continues to show kindness towards Seul-gi and invites her to her private study space, drawing the two girls closer together.

A furious Choi Gyung becomes suspicious when Je-i nominates Seul-gi as class monitor. Ju Ye-ri overhears a conversation about Je-i's former seatmate.

While Seul-gi finds details of her family history on Je-i's phone, Choi Gyung looks into the connection between the two girls' pasts.

Students take drastic measures to beat the stress of midterms. Choi Gyung shares a discovery with Seul-gi, causing them to question Je-i's intentions.

Ye-ri makes a deal with Je-i's father, Yu Tae-jun, by using his secret against him. Seul-gi worries about a health checkup following her exams.

Ye-ri steals Seul-gi's father's phone. As she tries to unlock it, the rest of the students head to the school festival.

An attack at the festival causes panic at the school. Je-i comes face to face with a figure from her past as they fight over the stolen cellphone.

As the police investigate the school's drug problem, Seul-gi comes under suspicion. Je-i makes a deal while seeking to help Seul-gi.