Trails in the Zero

Lore & Background

Crossbell is a modest city-state nestled between the sprawling Erebonian Empire to the north and the industrialized Calvard Republic to the south. Its survival depends on diplomacy, trade, and a delicate neutrality that both great powers are ever eager to exploit. The citizens of Crossbell take pride in their independence, their academy, and the quiet rhythm of daily life—unaware of how thin the membrane is between their peace and the ambitions of those who would see them absorbed or controlled.

The 'Zero' that gives the game its name is a force of extraordinary and unsettling power, one that defies easy explanation and seems to warp the very fabric of the world around it. Its appearance in Crossbell is not an accident; it is a thread pulled by forces as old as the continent's history, involving secret societies, ancient pacts, and individuals who see the small nation as a chessboard rather than a home. The mystery of what Zero truly is—and who benefits from its unbinding—drives the narrative forward with a sense of creeping dread.

Ouroboros, a shadowy organization whose reach extends across the Central Continent, operates in the background of Crossbell's politics, manipulating events from behind the curtain. Their presence in this story plants seeds that will bloom across the entire Trails series, linking the fates of teachers, students, princesses, and soldiers in a web of loyalty, betrayal, and quiet sacrifice that fans have come to cherish.

In Their Own Story

The rain had not stopped for three days. Rean stood at the window of his small office in Crossbell Academy, watching the grey sheets curtain the courtyard below where the students had been sent inside. His fingers traced the rim of a cold cup of tea, and beyond the glass, the spires of the city gleamed wet and silver. Elise's voice reached him through the door—soft, urgent, asking if he had seen the reports from the harbor district. He had. He had seen the scorch marks, the way the cobblestones had buckled as though the earth itself had exhaled. He turned from the window, met her eyes, and said nothing, because there was nothing yet to say. Only the weight of what was coming, pressing against the walls of their small, stubborn city like a tide that would not wait for permission to enter.

Reader's Guide

Trails in the Zero (Zero no Kiseki), released in 2010 for the PSP and later ported to PS4, Nintendo Switch, and PC, is set in the city-state of Crossbell on the Central Continent. The central conflict arises when a mysterious, world-shaking force known as 'Zero' manifests in Crossbell, drawing the attention of the Erebonian Empire, the Calvard Republic, and the covert organization Ouroboros, all of whom seek to exploit or contain the phenomenon. Rean Schwarzer, a young teacher at Crossbell Academy, finds himself at the center of the crisis alongside Princess Elise Schwarzer and a small group of students and allies. The narrative is divided into two parts: Part I establishes the mystery and the political tensions, while Part II escalates into direct confrontation as the true architects behind Zero reveal themselves.

The game's ending resolves the immediate threat to Crossbell's sovereignty and deepens the personal bond between Rean and Elise, while simultaneously planting the political and personal threads that carry directly into Trails in the Sky. The fate of the continent's balance of power, the lingering influence of Ouroboros, and the unresolved questions surrounding the nature of Zero all serve as narrative bridges to the broader saga, making this entry both a standalone story and a crucial foundation for the series that follows.

Did You Know?

• Trails in the Zero was designed as a prequel, meaning its events take place before the opening of Trails in the Sky, yet it introduces characters and organizations that will reappear across the entire Trails saga.
• Rean Schwarzer, the protagonist of this game, goes on to become a central figure in the later Trails of Cold Steel series, making this title his origin story.
• The game's two-part structure (Part I and Part II) was a deliberate design choice to give the narrative a clear act-break and allow the mystery to escalate in stages, a format that influenced the pacing of subsequent Tra
• Crossbell Academy, the setting for much of the game's classroom and daily-life scenes, is the same institution that features prominently in later entries, creating a sense of continuity for players who progress through t