TV-Series
Description
Yumeji Fujiwara, a high school student, possesses the rare gift of perceiving colored auras around individuals, allowing him to foresee their impending dreams and detect nightmares through lingering black hues. This power stems from a childhood encounter with Merry Nightmare, a mysterious girl from the dream world, which left them with matching scars on their right arms and fractured memories of their shared history.

Outwardly ordinary, Yumeji hones dormant combat abilities through rigorous training alongside allies like Engi Threepiece and the dream demon John Doe. His skills escalate with the "Lucid Gadget" technique, replicating dream demons’ powers by mirroring their signature abilities—conjuring weapons or bending elements. This evolves into "Ultra Lucid Gadget," permitting brief fusion with dream demons to harness their full might, though overexposure triggers exhaustion and chronic insomnia.

His ambiguous humanity emerges through an energy core identical to antagonist Pharos Hercules, granting dream-world immortality. This link traces to a childhood accident where his right arm was replaced by the dream demon Rem’s during an illicit venture into the dream labyrinth, rendering him susceptible to energy surges and agony when confronting dream phenomena.

Relationships shape his journey: his alliance with Merry focuses on securing her return to the dream realm while battling hostile entities. Their connection intensifies through shared trials, unveiling their entwined past as gatekeeper and human collaborator. Childhood friend Isana Tachibana offers emotional stability, their unspoken mutual affection persisting amid chaos. Transfer student Kyou Shiragi, tied to Yumeji’s history, introduces clashes involving manipulated dream entities and efforts to restore his dormant arm.

The story culminates in Yumeji relinquishing his supernatural gifts after stabilizing the dream world. While collective amnesia erases others’ memories, he preserves his recollections of Merry, encapsulating their journey in a novel—transitioning from adventurer to archivist. Defined by resolve, loyalty, and a self-sacrificing streak, he repeatedly risks himself to shield allies like Merry and Isana.