牧野发现水无濑和香住昏倒在Game研室，立即将他们送院，但最后只有水无濑醒过来，原因是一个音。水无濑对此事感到迷惘和不解，连小提琴班也没上。一天在上学的路上碰到了前来查询的德冈纯一郎，但水无濑却没有理会。在学校里再次遇到德冈，而触起她想知道事件真相的念头。调查了德冈纯一郎身份后在香住的病房里第三次碰上他，而且答应协助他的调查。在向牧野询问了The World的情况后的晚上接到了德冈要求进入Game研室的电话。此事遭牧野反对，但坚决要查明真相的水无濑答应了德冈的请求。
骇客时空：境界性 (季节 1)
In the Case of Mai Minase 7.0
播出日期: 2002-06-20
运行时间: 30 min
概述: In the first volume of the .hack//Liminality series, a Japanese school girl Mai Minase and her friend Tomonari Kasumi became unconscious from playing an online computer game and was rushed to the hospital. Fortunately, Mai Minase regained consciousness, but Tomonari remains in a comatose state. Later after the incident, Mai is one day on her way to school until she ran into a man named Junichiro Tokuoka who claims to know what caused her friend Tomonari to be in a coma. At that time, Mai doesn't know or believes him. Later, Mai had no choice but to believe Tokuoka and tries to find out how the popular online game, "The World" did this to Tomonari. Can Mai and Tokuoka find out clues about "The World" and wake Tomonari Kasumi up out of his coma?
In the Case of Yuki Aihara 7.0
播出日期: 2002-09-09
运行时间: 30 min
概述: In the second volume of the .hack//Liminality series, Yuki Aihara was a school girl who one day went to a school theater and while watching a movie, the words "The World" suddenly appeared on the big screen and suddenly, the entire town of Yokohama was blacked out due to power shutting off. People are desparately trying to escape and Yuki tries to get out as well. Suddenly, a mysterious woman who claims that she happens to work at the school theater helps Yuki find the way out of the theater. Can Yuki escape from the black out crisis and join up with Junichiro Tokuoka to get the answers about "The World"?
In the Case of Kyoko Tohno 7.0
播出日期: 2002-12-12
运行时间: 30 min
概述: In the third volume of the .hack//Liminality series, Junichiro Tokuoka travels to Tokyo, Japan to talk with a girl named Kyoko Tohno about the mysteries of "The World", an online computer game that put some people in a comatose state. At the same time, Kyoko has received a strange cell phone e-mail from Helba. They continue to discuss and are trying to get clues about everything related to "The World". They later meet a mysterious man named Sato Ichiro and speak with him to get answers. Will Tokuoka and the three girls Mai, Yuki, and Kyoko that he cooperates with be able to find the mysteries and clues of "The World" and save the comatose victims?
Trismegistus 7.0
播出日期: 2003-04-10
运行时间: 30 min
概述: Several weeks after the meeting in Hida-Takayama on Christmas Eve, Junichiro Tokuoka, Kyoko Tohno, Yuki Aihara, and Mai Minase all gather on a dinner boat in Tokyo Bay, to prepare for their risky (and most certainly illegal) mission. Despite their nervousness, each one is dedicated to helping Ichiro Sato complete the mission sent from Helba. Ichiro himself soon arrives on a different boat. While traveling to their destination, Ichiro reveals the true nature of the problems that have been plaguing The World. Harald Hoerwick's program, Fragment, had been nothing more than a program to create an "Ultimate AI". The system to create this A.I. had somehow become self autonomous, and was working to delay the birth of the A.I. known as Aura, to keep itself from finishing its purpose and ceasing to exist. If the problems are to be solved, the Ultimate A.I. must be born, and it's up to Tokuoka and his team to help that event occur.
季
集 4