Sound of the Sky

On Helvetia’s far edge lies Seize, a quiet town of cobblestone streets where everyday routines continue even as relations with the neighboring Roman Empire grow increasingly strained. Life moves at an unhurried pace beneath the shadow of a world that’s beginning to show its cracks.

Assigned to Seize’s Clocktower Fortress, the Helvetian army’s 1121st platoon welcomes an eager new recruit: Kanata Sorami. She enlisted with a simple goal—learning to play the bugle—and soon finds guidance from Sergeant Major Rio Kazumiya, a talented trumpeter. Alongside the reserved mechanic Noël Kannagi, hot-blooded gunner Kureha Suminoya, and kindhearted Captain Felicia Heideman, Kanata settles into the rhythms of garrison life, discovering the small, sustaining joys of music, camaraderie, and a community determined to endure.