The Blue Bird (2015)

High school senior student Sooeun is a victim of constant bullying. Fed up with life, she attempts to commit suicide but has no courage to do so. A few days later, Mirim transfers to the school as a new student and gives hope to Sooeun, who has lost her purpose in life. One day, Mirim stands up for Sooeun getting bullied, but she ends up getting bullied as well. However, Sooeun is afraid of taking sides with Mirim.