TWICE Momo's older sister has been getting hit with malicious comments after her dating news with Super Junior's Heechul.

Shortly after Momo (24) and Heechul (37) went public with their relationship, a few netizens have started attacking Momo's family on social media. One netizen wrote offensive remarks on Momo's older sister's Instagram page, reasoning, "Momo's older sister doesn't even know Korean, so it's okay to write this."

Momo's older sister is currently active as a dancer in Japan, and the TWICE member has previously revealed their close relationship to her fans. 

Meanwhile, other netizens expressed embarrassment over the negative comments, writing, "This is so embarrassing," "I hope she takes legal action," "I hope they don't deal with this nicely," and more.

In related news, Momo and Heechul confirmed they were dating on January 2.