How did Future Trunks get his sword?

[Goten Forever]

A way for Trunks to have gotten that sword is for him to do what he tried to do in the film, which is kill Hirudegarn with it, but Goku told him to piss off in his own way.
Trunks and Gohan would have been the strongest warriors in that part of the galaxy. Though, I'm not sure how Hirudegarn would have played out with the Androids being there and absence of Dragonballs. They found another way to open it?

[FindKenshi]

I like the idea of the sword just... finding its way into the hands of great heroes, the great and the brave. Trunks's may have come from some extraordinary encouter, or it could have just been a common item in the future like the guidebook says, or whatever, but his is still identical to the Tapion one, and there's something special about it just in the fact that Trunks has attached himself to that sword.

Erm, for those of you who read US comic books, its no different from alternate universe versions of popular characters still having some personal item their mainstream version has, "just because." Y'know? It's like, Trunks is destined to carry a sword. Sure Future Trunks lost his in battle, though.

Androids are stronger than legends.

[Piccolo Daimao]

I think I remember a theory that Trunks' sword "came from the heavens", as if it literally just dropped from the story and hit Trunks on the head or something. I'm not sure whether or not the theory was related to the Z-Sword or whatever, but I just thought it's worth mentioning (even though I've said it before).

To be honest, it could be anything.

[FindKenshi]

About the sword just being any regular old sword--Trunks himself sure didn't seem to think so. After Goku blocked it with his finger, Trunks comments "You know, this sword sliced even Freeza in half." That'd be a pretty meaningless comment, if the sword was nothing, and it was only Trunks's strength that made is special. What do you guys think?

[Perfect]

"Just as I expected. The stories were true. No, you're even better! This is the sword I used to slice up Freeza."

"You just weren't trying your hardest."

Seems like Trunks is just amazed by Goku.

[dprez]

Yea that's what I thought. It was the force behind his sword swing which Goku so easily deflected with his finger that Trunks was surprised from. Freeza couldn't dodge nor block, he got sliced, off-guard or not, and that same sword slash had no effect on Goku.

[hleV]

"Just as I expected. The stories were true. No, you're even better! This is the sword I used to slice up Freeza."

Trunks quite obviously implies that the sword itself is kinda good.

[Perfect]

"Just as I expected. The stories were true. No, you're even better! This is the sword I used to slice up Freeza."

Trunks quite obviously implies that the sword itself is kinda good.

As Daizenshuu #7 points out, that's due to futuristic refinement.

[Bussani]

Sometimes when a swordsman says, "This is the sword that defeated so-and-so," they're referring at least partly to their swordsmanship rather than just the sword itself. But whether Trunks really counts as a "swordman" is debatable, I guess, and I do think Trunks' sword was likely very well crafted as far as swords go.

[Piccolo Daimao]

Sometimes when a swordsman says, "This is the sword that defeated so-and-so," they're referring at least partly to their swordsmanship rather than just the sword itself. But whether Trunks really counts as a "swordman" is debatable, I guess, and I do think Trunks' sword was likely very well crafted as far as swords go.

I think Trunks probably does count as a swordsman (or at least sees himself as one), otherwise he wouldn't be using it as his main weapon. But yes, it likely was very well crafted as far as swords go.

I do think he was merely referring to his swordsmanship and/or the fact that it was still his power behind the sword that allowed him to slice up Freeza. King Cold disproves the notion that it was the sword alone that killed Freeza when he tries to use it against Trunks, only for Trunks to catch it, call it a miscalculation and blast a hole through Cold. In the hands of any random guy, it would be useless.

[Relight]

I'm glad that people in here immediately stated the sword is not from Tapion, not only because that "movie"(If you want to call it that, it was definitely one of the worse DBZ movies, and with Bio-Broly, Lord Slug, Return of Cooler, etc., that's really impressive.), but considerign the fact that there's no way it even happened, and if it even DID happen, then Future Trunks would have had his sword far before we first see him within the manga being trained by Future Gohan, or in the special when he just randomly has it during the 3 years later timeskip.

It's obvious that the sword he uses is very well made, I don't think he got it from some random rebels or something, it's not just a random blade crafted normally. It most likely came from his mother's design, and is made of very durable material, considering it was used to cut up a being hundreds of millions times stronger than an average human. Also, when used against the androids in the main timeline, he's entirely shocked as to it shattering on the arm of one of the androids, as if anything besides his sword actually breaking was bound to happen.

So ultimately, I don't think it was a gift from Gohan, but maybe it was. Maybe Future Gohan did hand it down to Trunks before he died - was it ever shown what kid Gohan did with that sword that Piccolo had materialized for him? I'm sure regardless, AT forgot entirely about it, but I think it's cool to think that maybe, AT giving Future Trunks a sword, and having his trainer be a future Gohan, could be AT simply trying to tell us that yeah, this is the sword that Piccolo had given Gohan during his training, and that it was symbolizing the passing down from mentor to pupil and all that.

But in all likelihood, it was probably just an extraordinarily crafted blade made by his mother, and given to him for protection, or just that he thought it was cool to carry around, he was a teenager after all. He's quick to ditch it soon after it shatters, and is never seen with another one again, so I assumed he just realized that weapons won't help when you're not a lot stronger than the opponent, regardless.

[FindKenshi]

Him being quick to ditch it and never taking another sword also points towards the sword being special and one-of-a-kind. Without it, there's no point for him carrying another sword. And no one can repair it, because it's the Brave Sword of legends. Once broken, it cannot be fixed by anyone except people from Tapion's world.

If it were just some random sword crafted in the Future with Future technology, then Trunks could have simply purchased a new one.

[Perfect]

Because that totally makes sense. Movie #13 didn't exist during any of the Cell arc and therefore Trunks not having another sword wouldn't adhere to such logic. Even from an in-universe perspective that's silly. Once #18 broke his sword, maybe he just realized that a sword isn't going to help him anymore in a battle he's outmatched against as his fists would. Plus, he may have actually gotten a new sword but wasn't bringing it back into the past because there wasn't a reason to, which would be why he wouldn't use a useless weapon against a regenerating monster.

[Relight]

^Agreed, I wouldn't take FK seriously here or anywhere else. The sword is most definitely not from Tapion, and when Future Trunks saw it break, he just realized that it wasn't going to help out on anyone as strong or stronger than he was, so there was no point in getting another one anyway.

[SSJBardock91]

Personally I agree with Kaboom. Of course this would be speculation, but if I were writing it, I'd say after Tapion told Trunks to kill him with his sword, Trunks followed through unlike what happened in movie 13.

[Mystic Gohan]

He probably did IT to kaioshin realm and pulled out the z-sword, because he was stronger in his future.

[Piccolo Daimao]

He probably did IT to kaioshin realm and pulled out the z-sword, because he was stronger in his future.

How would Trunks learn Shunkan-Idou if he doesn't have a spaceship to travel to Yardrat?

[DBZGTKOSDH]

He probably did IT to kaioshin realm and pulled out the z-sword, because he was stronger in his future.

What?!

[Goten Forever]

He probably did IT to kaioshin realm and pulled out the z-sword, because he was stronger in his future.

Stronger than your namesake? I don't think so. Unless you believe human Videl can pull it out like in DBM.
He also does not know instant transmission, as nobody would be alive to teach him.
I'm surprised Goku never taught anyone instant transmission.
If you look at the possibly stronger GT Trunks (well if you count GT as canon) then if he knew instant transmission, he would have used it when Goku failed during that episode where their ship was nicked. He didn't so he clearly doesn't.
Bearing in mind that he has been around Goku most of his life and has had a much better opportunity to learn it than Future Trunks.

[Piccolo Daimao]

I'm surprised Goku never taught anyone instant transmission.

That's assuming that he can. Just because you know something doesn't mean you can instantly teach to someone else.