Mirror Game is a Manga/Manhwa/Manhua in english language, Manhwa series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

The ultimate race against time. Master illusionist K becomes a viral sensation after successfully hypnotizing people through their streams. But for their very last trick, they hypnotize all their viewers to commit mass suicide. Meanwhile, Jinwoo wakes up with missing memories and a video from K. Can he break K's spell in time?