Is the story any good?

[Kaito]

I Haven't touched story mode or anything like that yet, should I?

[Pastor Shotty McBangJump]

There isn't any gameplay, it's more of a multi-hour anime movie that lets you advance the dialogue at your own pace. It's alright, though.

[Senor Beef]

My opinion, I like the story. Out of the fighting game stories I played or watched, I prefer Guilty Gear's personally. Mostly due to the lore though.

Do know this ahead of time: If you're interested in checking out the story, this entry takes place during an already ongoing storyline:
If you want to be caught up with what happened before Xrd, you can watch the Guilty Gear Lore videos by WoolieVs.
For the Xrd arc, ArcSystemWorks uploaded the whole Xrd story (Sign, Revelator, Rev2)

[Karutamaru]

Also play Guilty Gear 2. It's pretty important.