Angnyeogyosil

A high school student named Heo Jeong-U is regularly bullied by a girl in his class due to his perceived weakness. A new student, Han Bo-Ra, joins his class, and Jeong-U experiences a strong sense of déjà vu upon seeing her, especially due to her straight black hair and stained legs. Han Bo-Ra calms a disagreement among classmates and asks if anyone has seen a child like her before. Jeong-U decides to get to know her, believing she may help address the problems he faces.