Lain Iwakura's Network is a central theme in the anime series Serial Experiments Lain. It represents a virtual realm where individuals can connect and communicate through technology. The network blurs the lines between reality and the digital world, allowing users to explore their identities and relationships in new ways. As the story progresses, Lain, the main character, becomes increasingly immersed in this network. She discovers its complexities and the impact it has on society, including themes of isolation, consciousness, and the nature of existence. The network serves as a metaphor for modern communication and the influence of technology on human interaction.