Platonic Chain: Web

In the near future, technology has made a few leaps and bounds, and videophones and constant wireless internet access are available to everyone. However, it would seem that the government has been careless and a skilled hacker was able to break into the national information archive. Using the data held there he creates the Platonic Chain website for people to discover information about themselves and their friends. Words start to spread quickly that there is a site that enables you to look up anything. Coincidentally, three young girls, Hitomi, Rika, and Kanae, are able to access the site. Note: The DVD version of Episode 16 was released with some minor variations compared to the regular TV broadcast

2061 AD. Fifty years have passed since mankind developed the Network society. It was anticipated that this new infrastructure would realize a utopia where people connected with each other at the level of consciousness. However, new social problems such as personal data leaks and proliferation of manipulated information began to surface. Nevertheless, people still relied on the Network to exchange information, and proved unable to opt to abandon it. In due course, a new Network realm with more effective security measures was developed. This was called Meta Real Network, usually abbreviated as "the Metal." The Metal accommodated personal memory data within protected virtual stand-alone organic cyber enclaves called bubble shells and eventually pervaded the everyday lives of people. However, people gradually learned to release and explode their instincts within the secure environment of the Metal. The unleashed instincts pushed each individual's consciousness to drown in the sea of information and to be exposed to the pressures of desire. Meanwhile, norms and regulations continued to bind their real world lives. Thus, strange friction between the two worlds began to manifest themselves as aberrations beyond the bounds of the imaginable. Experts who challenged the deep sea of the Metal to investigate and decipher such aberrations were called cyber divers. This is a story of a cyber diver, Masamichi Haru, who investigates the incidents that lie between Reality and the Metal.

The story centers on the Platonic Heart, a jewel that — according to an old urban legend — can grant any wish when collected. Only a chosen few are allowed to compete in the Platonic Heart hunt, and high school junior Aya Iseshima is one of 11 girls and women who are taking part.

Wataru Minakami is a top student who failed his high school entrance exam because of a computer glitch. He later discovered that he was accepted to Stargazer Hill Academy, which is located at a mysterious place called Promised Island. At the request of his father, Wataru is whisked away to the island, and before he can settle in, a dozen of cute and charming girls start to flock him and claim to be his younger sisters. As Wataru gets closer to his newfound siblings, a deeper mystery as to why they were sent to the island comes to play.