By the year 2061 AD, the Network society had been present for fifty years. Initially, it was anticipated that this society would result in a utopian world where people could make deliberate connections. Nevertheless, the realization of issues such as personal data breaches and misinformation demonstrated that this new system had flaws. Despite these complications, people continued to depend on the Network for communication and were hesitant to abandon it. Later on, a safer Network emerged, referred to as the Meta Real Network or "the Metal." The Metal used virtual organic cyber enclosures called bubble shells to protect personal memories, progressively becoming an indispensable part of day-to-day life. However, as people grew at ease in the Metal's secure environment, they began to indulge in their desires and relinquish their inhibitions, leading to a struggle between the necessities of reality and the unlimited freedom obtainable through the Metal, resulting in unimaginable abnormalities. To examine these irregularities, expert specialists known as cyber divers began to delve into the depths of the Metal. The story revolves around one such diver, Masamichi Haru, who discovers the secrets that exist between the Real and the Metal.