Echoes of the Reverse Planet

When Uhyeon Baek accesses Reverse Planet, he thinks he is going into a VR adventure. However, he steps into a real-life setting. He has gone through a lot of trouble and pain throughout his voyage until now, during which he became a very powerful killer. Eventually, he manages to assassinate the man responsible for the pain he has experienced. However, after going back to his normal life, he realizes that he cannot get rid of the memories of his comrades who are dead now.
During his attempt to recover from the trauma, he goes back to Reverse Planet, only to find out that he participates in a very dangerous game. He partners up with one of the most famous streamers, Soyul Kang, and becomes well known for his incredible skills.