Maybe an ancient and powerful ninja who was sealed away in the past and Team 7's time - traveling disrupts the seal. This ninja then sees Team 7 as a threat to his plans of ruling the world and becomes the antagonist.
Perhaps they travel to a time in the past where a powerful and dangerous jutsu was first created. They have to stop the jutsu from being misused in the future. Along the way, they face challenges like dealing with the original creator who might not want to give up on his creation, and also face other ninja who want to steal the jutsu for their own evil purposes.
Goku's godlike power might make his time travel more precise. Normal time travel in the Dragon Ball universe can be a bit haphazard, but with his godly energy, he could target specific moments more accurately. For instance, he could arrive at the exact second he wants to in the past or future.
There's also 'Naruto: Time Warp of the Godlike Shinobi'. This fanfiction has Naruto traveling through time and becoming an even more powerful force. He uses his new - found knowledge and abilities to outwit his enemies and bring about a different future for the ninja world. It's a great read for Naruto fans who like time - travel concepts.
One great 'Godlike Luffy Time Travel Fanfiction' is 'Luffy's Time - Hopping Adventure'. In it, Luffy travels back in time and uses his future knowledge to change the course of events in the One Piece world. He teams up with his younger self in a really interesting way, making for a very engaging read.
Time travel can completely change their missions. They might have to redo a mission they already completed in a different way. For example, if they failed a mission in the original timeline, they could go back and try to succeed this time. Or they might have a new mission altogether because of the changes in the timeline that they caused through time travel.
Well, 'Team 7's Time Travel Adventure' is also a notable one. The story starts with a strange jutsu gone wrong that sends Team 7 back in time. They then have to find a way to get back to their own time while also trying not to disrupt the past too much. It's full of humorous moments as the characters struggle to adapt to the old - fashioned ways of the past.
A common trope in these fanfictions is the 'fish out of water' situation. When Team 7 travels to a different time, they are not used to the ways of that era. For example, if they go back to a more primitive time, they might be shocked by the lack of modern ninja tools. It creates a lot of comical and interesting situations.
One great time travel fanfiction involving all of Team 7 could be where they go back in time to prevent a major tragedy. Maybe they go back to save their village from an earlier attack. In this type of fanfiction, it often explores how the characters' knowledge of the future can change things.
One main theme is self - discovery. When Natsu travels through time, he often has to re - evaluate who he is and what his purpose is. Another theme is the power of friendship. Despite being in different time periods, Natsu's relationships with his guild mates play a crucial role.