"Kyousogiga Dainidan" is a 10-episode anime series that expands upon the original "Kyousogiga" ONA, blending surreal fantasy, familial bonds, and metaphysical themes into a vibrant narrative. The story is set in a fantastical version of Kyoto, known as the Looking Glass City, a place where the boundaries between reality and imagination blur. This city is inhabited by humans, animals, and anthropomorphic beings, all coexisting in a chaotic yet harmonious environment.

The central figure is Koto, a spirited young girl with a hammer imbued with mystical powers. Koto arrives in the Looking Glass City in search of her family, though her origins and purpose remain shrouded in mystery. Her journey intertwines with the lives of the city's enigmatic residents, particularly the Oumi siblings: Myoue, Kurama, and Yase. These siblings are the children of a monk and a celestial being, and their existence is tied to the city's creation and its intricate balance. Myoue, the eldest, is a calm and composed figure who serves as a guardian of the city. Kurama, the middle sibling, is pragmatic and often clashes with Koto due to her disruptive nature. Yase, the youngest, is a gentle giant with a deep connection to the city's spiritual essence.

The narrative delves into the origins of the Looking Glass City, which was created by a monk and a rabbit deity as a refuge for their family. The monk, known as the "Father," and the rabbit deity, referred to as the "Mother," sought to create a world where their children could live freely. However, their creation became a self-sustaining realm, and the family was separated across dimensions. Koto's arrival disrupts the fragile equilibrium of the city, as her presence stirs memories of the past and forces the Oumi siblings to confront their unresolved emotions and the truth about their parents' disappearance.

Throughout the series, themes of identity, belonging, and the cyclical nature of existence are explored. Koto's journey is not just a physical quest but also an emotional and spiritual one, as she grapples with her own identity and her connection to the Oumi family. The narrative is nonlinear, with frequent flashbacks and symbolic imagery that reveal the characters' backstories and the city's history. The interplay between the fantastical elements and the deeply personal struggles of the characters creates a rich, layered story.

The series culminates in a resolution that ties together the threads of the narrative, as Koto and the Oumi siblings come to terms with their past and their roles in the Looking Glass City. The ending emphasizes the importance of family and the enduring nature of love and connection, even across dimensions and time. "Kyousogiga Dainidan" is a visually and thematically dense series that combines whimsical fantasy with profound emotional depth, offering a unique and compelling viewing experience.