I Transmigrated into Sasuke, but I Refuse to Become a Rogue Ninja

Transmigrated into Sasuke Uchiha just after the Night of the Uchiha Clan Massacre, he hears the System tell him: “Whenever you defy the original story’s direction, you’ll receive a reward.” Sasuke: “You mean I can get stronger just by not leaving the village, not chasing Itachi, and not turning into a revenge machine?” System: “That’s right.” Sasuke looks at Itachi Uchiha, who has just slaughtered his clan and now glances back beneath the moonlight. “...Brother, can we sit down and talk?” That night, Itachi’s Eternal Mangekyo nearly went out of control, not from grief, but from shock.

Core premise:

The transmigrator awakens at the very first second of the Night of the Uchiha Clan Massacre, with Itachi having just slaughtered the entire clan and standing beneath the blood moon, face-to-face with “Sasuke.” In the original story, Itachi tortures Sasuke with Tsukuyomi, setting him on the path of revenge. But the transmigrator knows the whole truth: Itachi was forced into it, Danzo was the mastermind, and the massacre was a political conspiracy. He doesn’t hate Itachi. He even understands him. When he looks at Itachi and says, “Brother, I know you were forced to do this,” the entire course of fate collapses. The System’s core mechanic is simple: the original story is a “predetermined track,” and whenever the protagonist makes a choice that deviates from it, the greater the deviation, the richer the reward. In other words, the less Sasuke acts like Sasuke, the stronger he gets. He doesn’t leave the village, shut himself off, act like an edgelord, or seek revenge, and every choice makes him stronger. But there’s a catch: once “Sasuke” is no longer that Sasuke, the butterfly effect will turn the entire shinobi world upside down. The Akatsuki’s plans, Orochimaru’s designs, Danzo’s schemes: every plot originally aimed at “the avenger Sasuke” will spiral out of control.