"Date a Live II" continues the narrative of Shido Itsuka, a high school student tasked with preventing catastrophic events caused by Spirits—mysterious beings from another dimension. The series expands on the concept of sealing Spirits' powers by making them fall in love, a process Shido must undertake to save both the Spirits and the world. The second season introduces new Spirits, including Yoshino, who initially appeared in the first season, and two new key characters: Kotori Itsuka, Shido's younger sister, and Origami Tobiichi, a classmate and member of the anti-Spirit organization AST.

The plot delves deeper into the complexities of the Spirits' existence and their interactions with humans. Yoshino, a timid Spirit, becomes a central figure as her backstory and emotional struggles are explored. Kotori, revealed to be the commander of the organization Ratatoskr, plays a more prominent role, balancing her responsibilities with her personal connection to Shido. Origami's dual identity as an AST operative and Shido's classmate adds tension, as her mission to eliminate Spirits conflicts with her growing feelings for Shido.

New Spirits introduced in this season include Kurumi Tokisaki, a dangerous and enigmatic Spirit with a penchant for manipulation, and Tohka Yatogami, a Spirit from the first season whose relationship with Shido deepens. The narrative explores themes of trust, identity, and the consequences of wielding immense power. Each Spirit's arc contributes to the overarching plot, revealing more about their origins and the mysterious forces at play.

The series maintains a balance between action, romance, and supernatural elements, with Shido navigating his role as the mediator between Spirits and humanity. The stakes escalate as the true nature of the Spirits and the organization Ratatoskr's goals come to light, setting the stage for further developments in the overarching story. "Date a Live II" builds on the foundation of its predecessor, expanding the world and deepening the emotional and narrative complexity of its characters.