Jacques Yvain, creator of the DZ automata that power his near-future society, anchors its technological progress while estranging his son Derrida through relentless devotion to his work. Their fractured relationship shatters entirely when Derrida exposes a critical flaw in the DZs’ programming, condemning Jacques for favoring machines over human lives. Though presented with a digital patch to correct the defect, Jacques succumbs to bribery from Rebuild CEO Hans Andrei, halting the fix and unleashing the flawed automata globally. His inaction sparks widespread conflict and culminates in his assassination by Andrei’s agents, who mask the murder as collateral in a fabricated conspiracy to bury the DZs’ vulnerabilities. Jacques’ death drives Derrida into cryogenic stasis and later fuels his crusade to salvage a world ravaged by the unchecked machines. The inventor’s choices linger as pivotal forces in the series’ exploration of ethical compromise and corporate power, their repercussions echoing through every layer of the collapsing society he helped build.