On the collapsing world of Vektra, maintenance tech Rion Vale keeps people breathing with valves, tape, and stubborn hope. When an evacuation finally names his family-but not the girl he loves-Rion rides a silver arcship to the curated paradise of Elaris, where air is clean, rules are kinder than they look, and "welcome home" cuts like a blade.

Elaris runs on balance sheets and optics: birds instead of extra seats, fountains brighter than neighborhoods. Rion can't stop seeing the cost. He carries a vow back into the ruins and returns with what he can-proof, not miracle-then turns that grief into work: a quiet rebellion built from spare parts, forms sharpened into weapons, and a fragile coalition with a principled official who risks her badge to dim the city's lights so strangers can live.

As demand spikes and the grid begins to fail, Rion and his brothers improvise a "community lung" the capital can't turn off-a fix so plain it's heresy. Between a ladder into power and a line to the people who kept him alive, he chooses to be what the world needs most: a keeper.

Gritty and tender, FAULT TOLERANCE is a propulsive novel about who gets air and who decides; about love as labor, family as infrastructure, and the stubborn beauty of systems built to serve the many. It's not a story of miracles. It's a story of maintenance-and the courage to make room to breathe.