Usotsuki Game

"It's time for the Liar Game." Suddenly, eight men and women are gathered in a mysterious building. There is apparently a "Liar" among them who once took a human life. The condition to escape from this place is to find the "Liar" together. The deadline is 7 days. If the correct person is not revealed within the time limit, all participants except the "Liar" will lose their lives. The doubt and suspicion begins, in which everyone is an enemy and everyone is a friend. Can you find the "Liar" and escape from this place safely? And what is the purpose of this "Liar Game"? All will be revealed in the end.