JYJ Yuchun's former fiancé Hwang Hana, the reason why a student sued her.

* Ms. Hwang's malignant writing on SNS in Engagement with Yucheon.

* Ms. Hwan thinks that the student who lives in Seoul Seocho is the boss of malignant writing as a result of private investigation.

* Ask an acquaintance and create multiple accounts. Posts a lot of SNS contents that insult students with each account.