And so we reached a new city: Gamboge City.
there's a gym, a lab, that berry powder geezer from FRLG for some reason... and a skateboard shop (this game's bike equivalent. It's one of the few games where it breaks the tradition along with Unbound, and i guess XY/USUM) Obviously, i went straight into the shop only to deal with a hide-and-seek quest to get the board (find 4 Hidden NPCs)
3/4 NPCs were on Gamboge City, and the last one was on Seafin City
(pretty clever).