Tea Rock is probably the only place at the UP Town Center where you can hang out and study - most of the places there are actually for eating. I originally wanted to go somewhere else (to try a certain girardelli drink), but it was full to the brim.
Tea Rock has a giant menu, including dinner items. It's very difficult to read it from the wall, but the prices are standard milk tea shop prices (unlike most shops in that area, which I find cray-cray for something with UP in it).
It doesn't use the more common (nowadays) coaster buzzer.
A drink each for my friend and I. Tiramisu M (P90) on the left and Raspberry Cocoa L (P100) for me. It tasted fine, not spectacular, but not bad either. The pearls were chewy in a good way but were relatively tasteless, so it's kind of meh.
Physically, the store was well lit and decorated, but the music was a bit loud (tea ROCK?) so it wasn't a great study spot. However, this is probably one of the best places for students to hang out (since most other places here aren't really student friendly).
I probably wouldn't go back here soon simply because both traffic and parking at this area is insane. :(