Dragon Ball Super Episode 49 Review: History Of Future Trunks Explained

Future Trunks actually exists in an alternate future, that for some reason exists along the same timeline as a past that cannot explain the future Trunks returned to the first time. The last time we saw Future Trunks was during the Cell Games, and Goku sacrifices himself to save the world from Cell’s self destruct attack. According to Trunks he then returned to his future, where somehow all the Z-Fighters are still dead, even though they defeated both Cell and the Androids, who were the reasons for their death. He also goes on to tell us that he defeated Babadi and Dabura, to keep Majin Buu from awakening. Then, “Goku Black,” appeared and within a year almost killed every person on the planet. So, if Trunks kept everyone from dying by the hands of the Androids, in the past, why are they, along with the androids and cell, still dead in the future? Because, if Trunks’ actions in the past do in fact change his future (evidence of this is that the world is still in tact, everyone on Earth is till alive, and Babadi is able to surface), then everyone should still be alive in his future (except for Launch). My guess is that Trunks, because he has traveled through time, exists outside of time and created an alternate future that is only slightly affected by his actions in the past. Trunks does remember that Goku sacrifices himself in the Cell Gmaes, but does not know that he is brought back during the Buu Saga, because this is not his past. He exists on another timeline entirely, that is only somewhat affected by the events from the current timeline. This still does not explain why he is still the only Z-Fighter left in his future, or why Mai is his age. The only explanation is that his alternate timeline is broken and Bulma's time machine allows him to travel through time and to different timelines. 

I'm confused too buddy...

Honestly, the laws of space and time do not apply here, Trunks is from an alternate timeline, but can still travel along the current time, because... Dragon Ball. But the story is still cool at least! Next episode will see a show down between Goku and Goku Black, hopefully, seeing as Black finds a way to follow Trunks back in time, at the end of the episode.