Fifteen years earlier, a wormhole opened in the heart of the Pacific Ocean, linking Earth to an alien realm teeming with sprites and beasts. The metropolis of San‑Teresa quickly became a sanctuary for more than two million of those extraterrestrial arrivals. The sudden influx, however, seeded its own woes—drugs, prostitution, and smuggling ran rampant through the city"s alleys. To counter this surge of crime that crept into every shadow, the San‑Teresa Metropolitan Police established a dedicated division for interspecies law enforcement.
Kei Matoba, a former JSDF trooper, is among the finest officers in that unit, even though he sometimes flouts protocol. When a trafficking investigation collapses, Kei loses Rick Fury—his partner and confidant of four years—which drives him toward vengeance. The department assigns Tilarna Exedilika—a noblewoman from the Farbani Kingdom—to aid him. As a Knight of Mirvor, her mission is to retrieve the noble sprite Kei had encountered in his previous case. Though he harbors a dislike for non‑humans, he complies with the directive of his superiors. Together, this unlikely pair must bridge their clashing views to restore the missing sprite to her homeland and avenge Rick"s death.
Their journey takes them through the glittering bazaars of San‑Teresa, into the shadowy tunnels beneath the city, and across the portal to the Farbani realm. Along the way they confront corrupt officials, ruthless traffickers, and ancient guardians who test their resolve. Through betrayal, trust, and shared purpose, Kei learns that justice sometimes requires partnership across worlds.
