"Yoasobi Gurashi" centers on a group of individuals who lead double lives, balancing their ordinary daytime routines with secretive nighttime activities. The protagonist, Akira, is a high school student by day and a skilled hacker by night, operating under the alias "Shadow." Akira's life takes a dramatic turn when they encounter Rina, a mysterious transfer student who harbors her own secrets. Rina is a member of an underground organization dedicated to uncovering and dismantling corrupt systems that exploit the vulnerable. Together, Akira and Rina form an unlikely alliance, blending their skills to expose hidden truths and challenge powerful adversaries.

The narrative unfolds in a near-future setting where technology and surveillance dominate society. Akira's hacking abilities become crucial in navigating this world, as they uncover a conspiracy involving a megacorporation manipulating public perception and controlling resources. The series explores themes of identity, trust, and resistance, as the characters grapple with the moral complexities of their actions. Supporting characters include Haruto, a former classmate of Akira's who becomes entangled in their mission, and Yuki, a skilled engineer who provides technical support and develops tools for their operations.

As the story progresses, the group faces escalating threats from both the corporation and rival factions within the underground network. Tensions rise as alliances shift, and the characters must confront their own motivations and the consequences of their choices. The series balances action-packed sequences with moments of introspection, delving into the personal struggles and relationships that drive the characters forward. "Yoasobi Gurashi" presents a layered narrative that intertwines individual growth with a broader critique of societal structures, offering a compelling exploration of resistance in a technologically advanced world.