A South Korean woman has been acquitted after a court revisited her decades-old conviction for biting off the tongue of a man during an alleged sexual attack.

Choi Mal-ja was 18 when she was convicted of grievous bodily harm and sentenced to 10 months in jail. Her aggressor, who was 21, received a lighter sentence of six months.

After a years-long campaign to clear her name, a retrial began in the southern city of Busan in July. In its first hearing, prosecutors apologized to her and, in an unusual move, asked the court to quash the conviction.

I could not let this case go unanswered... I [wanted] to stand up for other victims who share the same fate as mine, Ms. Choi said after the acquittal.

As a teenager back then, the incident changed her fate by turning [me] from a victim to an accused.

People around me warned me that it would be like throwing eggs at a rock, but I could not let this case go, said Ms. Choi, now 79.

She thanked her supporters, and called out those in power whom she said abused their authority to trample the weak and manipulate the law.

According to court records, the attacker had pinned Ms. Choi to the ground somewhere in the southern town of Gimhae. She only managed to break free after biting off about 1.5cm (0.59in) of his tongue.

In one of South Korea's most contentious rulings on sexual violence, the man was given a six-month suspended sentence, for trespassing and intimidation. He was never charged for attempted rape. Ms. Choi received the harsher sentence for causing him grievous bodily harm, with the court saying at the time that her actions exceeded the reasonable bounds of self-defence.

In 2018, inspired by the global #MeToo movement, Ms. Choi filed a petition for a retrial, spending two years gathering evidence. After being rejected by lower courts, the Supreme Court eventually allowed her case to be reopened in December 2024.

Outside the court on Wednesday, supporters celebrated, holding placards that said, Choi Mal-ja did it! and Choi Mal-ja succeeded.

Ms. Choi's lawyer described the earlier conviction as a misjudgement due to gender bias and societal perceptions.

Ms. Choi plans to file a civil lawsuit against the state to seek compensation, advocating for a future where women’s defensive actions are recognized as legitimate.

Her case, now a key example in legal textbooks, symbolizes the ongoing struggles for justice faced by victims of sexual violence in South Korea.