MASC's Chibin shared a concerning post.
On July 25, Chibin posted a message aimed towards an unnamed hyung via Instagram.
"I guess you have made a sin but want to escape. Hyung, I guess you have no intentions to apologize for the pain in my heart and body that you have caused that day. Hyung you are the only one I've unfollowed. The reason? Because I'm getting goosebumps thinking about how you will be uploading posts as if nothing happened. I'm sure you will be reading my post. If you think I'm fine then that's a big mistake and misunderstanding. That day comes back to my mind when I turn off the lights and lay in bed at night. I still have scars on my face. Don't think the past is just the past. I can't forget that day. The day when I cried while soaking in the rain and watching my blood drip..."
MASC made their debut in 2016 and has been going through major changes with the members. They welcomed 4 new members in 2017. Based on Chibin's post, fans believe there is trouble within the group. Meanwhile, the only member Chibin is not following on Instagram is ACE.