VIXX has had a lot of issues with people plagiarising their music.
It happened with Dynamite, and most recently happened with VIXX LR's Beautiful Liar. It was used in an OST for a Chinese drama (which I cannot find the video of as its all been taken down)
Usually this issue would be resolved behind the scenes, but apparently the wife of the man who wrote the OST song (who claims he didnt steal from VIXX) started attacking Starlights online that were asking the man to apologize to VIXX.
And once fans feelings get involved, VIXX stands up for them.
Ravi now is part of the writing team for nearly all of VIXX's songs and has written for many other groups as well. He's a creator, and as a creator he takes plagiarism super seriously.
I'm glad he spoke out about this in such a calm and dignified way:
TRANSLATION THANKS TO F-YEAHVIXX!