When you have access to the future, you'd be a fool not to use it when it comes to matters of great importance. And within the mafia, nothing is more important than Inheritance. Or, Lambo discovers there's a reason the Bovino shouldn't read the Epilogue first.

Hibari Kyouya travels in time and takes over the world. Basically crack.

Obito gets lost on the way back to the afterlife.

Kakashi is being trolled. He doesn’t know how that can be, but he knows with utmost certainty that he’s being trolled somehow. OR Kakashi gets saddled with the cheekiest little brats ever and wonders if it's too late to become a missing nin.

Some changes in a timeline create big effects. Other events barely shift. The ten year bazooka allows for a glimpse of the new future...

What if when Nie Huaisang went back in time to save his brother, he brought not only himself but the rest of the Sect? AKA the fic where the Nie Sect is very overprotective of their Sect Leader and Nie Mingjue is very confused.

“If we get home, you mean,” the Jin sect junior muttered. “Where even are we? And who’s the guy playing Chenqing?” Wei Wuxian was mildly offended. Who in the world knew enough to recognize Chenqing on sight but couldn’t recognize him? “I’m pretty sure that’s Senior Wei,” the shorter Lan sect junior said. “Just, you know, not…Senior Mo.”

Nie Huaisang thought that - should the time travel array actually work and he end up back in time before everything happened, with his brother still alive and well - that the first thing he would do would be to properly weep and cry and hug his brother, not jump straight into explanations and strategizing. Then again, he hadn't expected that the array would somehow send his spirit into his brother's body, casting his brother's spirit into his own past self, either.

Wen Ning has lived as a sentient fierce corpse for about four hundred years. Going back in time could have been an accident, but isn't.

“I can’t believe you ruined my boots,” Leia says, outraged, and pushes Dooku’s face further into the mud.

Wolffe looks like he’s regretting having a second Jedi with them. 

When Aizawa Shouta walked into his new class and saw everybody calmly seated and chatting, as if they'd done this a million times already, he just knew this year was gonna be long. Or, Shouta strongly wishes he had expelled his whole class on Day One, because figuring out what the hell is going on with them just feels well above his pay grade.

In the original timeline, Shanks took Higuma's mistreatment calmly and with dignity, shaping Luffy's essential character for the rest of his life. In this timeline... "Huh!" said the kid. He tugged at his cheeks. "Guess I'm in the past, then!" His expression cleared, because apparently that made sense to him, and he grinned. "Shanks! Hey, Shanks, you never told me how cool you are!"