A Terminally Ill Girl's Liminal Game

Lin Zhan was nineteen years old. He was born with a heart valve defect and was told by doctors that he only had three days to live. At midnight, an existence called the "liminal system" appeared in front of her: accept the contract, enter the adventure game, and survive by clearing the level; reject the invitation, die according to the original trajectory three days later, and all traces of existence are permanently erased. She has no choice. When the rules tell you that you must kill each other to stay alive - will you choose to be the murderer, or be the first to stop?