SwordGear?

[Kraiseson]

What does this skill do?

[Freshellent]

Makes that Rising Slash/Upper PA charge faster depending on how full your gauge is. Someone can explain it better than me, but I believe it's from doing damage/hits to a target. It appears above your action skills on the HUD, pick it up, slap a few things around and then use the PA, it should charge almost instantly.

[Vashyron]

It effects all Sword PAs in some form, most notable is that it makes chargeable PAs much quicker to charge but for example with Twister Fall it sends out a Shockwave after landing or the Sonic Arrow PA projectile actually hits targets 3 times.

[Eclipse5632]

I noticed that Cruel Throw kind of a spiral-y visual effect on it when your gear is maxed, but I'm not sure if it actually does more damage. I'm also not sure if it affects Stun Conside.

[Eggobandit]

lightning shockwave is added on stun skill similar to Partisan Gear