"This is fun!" she calls out as she passes.

"It so is."

Laughter, and then she puts on a burst of speed - still, she doesn't try getting too ahead of Addy.

Addy wouldn't let her even if she did try. The next oddity on the track is a loop-de-loop, though for this one there's also a flat path next to it.

River's ready to challenge herself. And probably fall at least once doing so, but, hey.

You do have to be running pretty fast to make it work but not as fast as conventional physics would suggest. The pace that they're already going suffices.

Awesome!

River seems to be having a lot of fun, still.

There is a reason Addy brought her here instead of to a more conventional running track.

Seems to have been a good decision!

And they've now completed one loop of the track, no reason to stop after just one though.

River's up for a second loop - which she handles much more gracefully - but wants to stop after that.

"All done then?"

"Yeah! With this, at least."

"Sure, I'm not much for running endlessly either. Do you have anything in particular you'd like to do next or do you want me to come up with things?"

"I do want to learn things that'll be - helpful with breaking out."

"I think you've mostly got the hang of imposing your magic on your body, it will be different and probably harder when you're outside but I'm not sure how much help more practice inside will be. I'm sure Libby would be willing to go over what she's learned about the facility layout and security if you'd like. Sen could also help you learn to fight more effectively if that's something you want to practice."

"Layout and security, I think, and then fighting to get the edge off."

"Alright, would you like to meet Libby back in your library or would you prefer to see Libby's main library?"

"I'd like to see her main library, if she doesn't mind."

"We can definitely go to the main library, though generally there's at least a few people wandering about it's a public area for all that Libby made it. If you don't want to be around random people I can ask her to fork it temporarily, it won't take that long."

"...Yeah, I don't want to be around random people right now."

"I thought so." Addy looks to be concentrating for a moment. "Libby will send us a portal when it's ready."

"Okay. Thanks."

About a minute later a portal opens up in front of them. It leads into a massive lobby, there's a massive stained glass ceiling that paints the central area they arrived in with a variety of colors. There are sixteen different wings with ten stories which stretch of as far as the eye can see, all lined with shelving and the entrances to aisles. All the floors are serviced by a network of catwalks and stairs. A number of free floating moving platforms are also flitting to and fro. In a few places there are glassed fronted nooks and in others there are mirrors with about the same size and shape. On the lowest floor there are what look like futuristic computer consoles with holographic maps floating among them. The maps indicate that the library is series of concentric rings with the corridors spines joining the rings together.

Libby is waiting for them.

"Hey," River says, quietly.