Quick Transmigration: From the Start, I Turned Over Every Unjust Grievance

After dying suddenly, Lin Su is selected by the "Unresolved Regret Repair System" and becomes the only repairer of regrets. The System tells him that every regret remembered by the world will manifest in a parallel universe as an "Unresolved Regret World." The resentment in these worlds is eroding reality, and he must transmigrate into them and rewrite the heart-wrenching endings.

A Zhu need not die outside Yanmen Pass. Zhuge Liang can witness the restoration of the Han dynasty. Uesugi Erii can learn Lu Mingfei's real name... For every unresolved regret task he completes, Lin Su earns points, skills, and extra years of life. But if he fails or changes too much, he will suffer the deadly backlash of the "force of historical correction."

Even more strangely, a mysterious organization called the "Guardians of Fate" keeps trying to stop him from the shadows, claiming that "some regrets exist to protect a greater destiny." But when Lin Su collects all thirty fragments of unresolved regret, the System unlocks a shocking truth: hidden behind it all is the greatest unresolved regret of his own life...

Every step on the path to changing fate is fraught with danger. Can he save every regret, and still save himself?