Free The Fallen, actual game.

Something occurs to Caelar. "What does Cosmo look like? He wouldn't happen to look like a cat, would he?" He turns to the others. "Just a hunch."

"Cosmo is a cat, but not one, it's hard to explain. He is the stars themselves in the shape of a cat."

Caelar attempts to wrap his head around that, but is having trouble. He looks to the others to see if they have a follow-up while he tries to make sense of it.

Tarathi stretches her imagination and 2 things come to mind a bunch of cats with a hive mind or a star constellation shaped as a cat. "Is there some obvious detail for Cosmo that we can see to tell us we are indeed looking at Cosmo because we ran into a bunch of cats, but they seemed like ordinary cats to me" 

"You will be able to differentiate him from other cats, imagine a cat, but the fur is like staring into space."

"Can you tell us about any potential leads or habits Cosmo has so we can track them down?" asks Tarathi

Yuki exhales, "I only met him for a few minutes, so I don't know much. He speaks in rhymes and is mischievous."

Dagna asks, "Any clues you can give us about where to find your tail? What would it look like? Where might it be?"

"I can only guess those, all I know is that it's in this city. And once you get close enough to it, you'll feel it's power."

Dagna nods, "Thanks, that we'll feel its power if we get close is a good clue. So we just need to tour the city till we feel it's power. Any idea how close to it we'll have to be?"

"You would be able to feel it within about 100 feet."

Dagna nods, "Good. That's far enough so we don't  have to search every building, just wonder around a lot."

Caelar adds, “While keeping a lookout for cosmic-looking cats.”

With a plan in place Tarathi begins touring the city for the sights and for any cosmic cat.

Tarathi goes outside and walks around the city.

Roll perception, investigation, and athletics.

Tarathi
Perception - 10
Investigation - 19
Athletics - 10

As people start to scatter, Dagna calls out, "We should stick together, at least to start with. At the very least we need to set up a rendezvous point"

Tarathi ends up winded after walking for awhile, but as she stops she feels something... powerful. She is on the second level of the city, on the west side, near what looks like an arena.

Tarathi moves to a higher position and with minor illusion creates a fluffy cloud that resembles a well-fed cat 30 ft into the air. In hopes of drawing her companions plus she is a bit tired. 

Caelar follows Tarathi and admires her cloud.