Haruo Kasuga belongs to Eden of the East, a university-based collective combining entrepreneurial drive with NEET cultural ties to develop image recognition technology and recycling systems. He shares a close bond with fellow member Satoshi Ōsugi, reflecting the group’s rejection of idleness in favor of proactive innovation. Prone to anxiety, Haruo frequently retreats under desks during meetings, his timid exterior masking a keen ability to unravel others’ motives, hinting at a sharp perceptiveness beneath his quiet exterior. Though not a central figure in the group’s leadership, he applies his technical expertise to the group’s computer-centric projects. During *The King of Eden* and *Paradise Lost*, Haruo remains on the periphery of events involving the Seleção and Akira Takizawa’s political struggles. The documented materials do not elaborate on his specific actions or evolution across these narratives, nor do they provide additional insights into his personal history or broader role in other media.