My Little Baby, Jaya is a 2017 South Korean drama film directed by Yoon Hak-ryul.[1][2][3]
Plot
The story of a 45-year-old man with cerebral palsy whose life is completely shattered when his teenage daughter, a victim of escalating school bullying and sexual violence, commits suicide. Feeling helpless and further let down by society, he decides to take extreme measures to express his grievances.
In the end, he disfigures the girls that bullied his daughter by disfiguring them with acid and murders the boys that gang raped her. However, he then commits suicide as he has nothing left to live for.