Naruto fan fiction + side character's comeback + everyone misunderstands the protagonist + not invincible + transmigrate + goofy comedy + System
The protagonist transmigrates into an insignificant nobody on the night the Uchiha clan is wiped out, and survives by playing dead.
The System he binds to issues a suicidal mission: shout, "Uchiha Itachi isn't the culprit," at the Uchiha clan's funeral.
The moment he finishes shouting, Kakashi covers his mouth and drags him away. "Kid, how do you know the truth behind the massacre?"
The next day, during a practical lesson at the Ninja Academy, he activates the ocular technique rewarded by the System.
A gigantic phantom dog head appears. Kakashi's eyes widen in shock. "You... inherited the power of a sacred summoning ground?"
From then on, he is forced down the path of being spectacularly misunderstood.
He publicly complains that Yuhi Kurenai wears too much makeup, and the System rewards him with the Body Flicker Technique.
Asuma puffs on his cigarette and sighs. "He moves like the wind. This kid has hidden depths."
Regardless of the plot and characters, it is still very funny. It would be nice if it was a book that makes people laugh. I was really laughing so hard that I didn't know what the universe was. May I give you some encouragement.