Where might one run across a....

[Mudkips]

Where might one run across a double sided saber in the PSU's story mode? I'm looking for one but am just having no luck!
Also, in Holtes city, is there a weaponry shop?
Sorry, I am a complete newbie to PSU.

[Mudkips]

Aw c'mon guys; I know someone has an idea on where to get one :[

[Bliven]

I'm pretty sure you don't get double sabers until like chapter 6 or something.

[Mudkips]

Darn, I'm currently entering the RELIC in chapter... 3

[Aviendha]

IIRC, you can buy the board before the weapon.