A man promises his fiancée he's done racing, means it absolutely, then discovers that promise was a slow suicide. The comeback isn't triumphant, it's desperate, selfish, necessary. Cyber Formula Zero understands that sometimes the thing you love and the person you love cannot exist in the same life, and that knowing this changes nothing.

Hayato Kazami's racing career crashes to a halt after a devastating accident leaves him physically shattered and spiritually broken. During his recovery, Asuka Sugo stands by him unconditionally, and in gratitude, Hayato proposes marriage with one condition: he'll never race again. But the pull of the track proves stronger than his promise. When the next Cyber Formula Grand Prix season begins, Hayato breaks his word and attempts a comeback. His resurrection as a driver forces him to confront three simultaneous battles: rebuilding his damaged body and reflexes, earning back Asuka's shattered trust, and defending against Henri Clayton's underhanded schemes. Beneath it all, the cause of his accident gradually comes to light, tied to something called the "Zero Zone." High-speed racing collides with human vulnerability in this story about choosing between ambition and the people who matter most.