"Liar Game Episode Zero", which contains 3 set of stories, each about Nao, Akiyama, and Yokoya 7 years prior to meeting each other in Liar Game."Liar Game Episode Zero", which contains 3 set of stories, each about Nao, Akiyama, and Yokoya 7 years prior to meeting each other in Liar Game."Liar Game Episode Zero", which contains 3 set of stories, each about Nao, Akiyama, and Yokoya 7 years prior to meeting each other in Liar Game.