The dungeon is in Korea, but as an esper with a pretty specialised power niche Haru is used to occasionally having to go international for these dungeons, and the fact that he already speaks Korean is definitely a bonus. The espers he's going to be working with are all in Quasar Guild, which is the largest one in Korea and which has just recently acquired a very powerful teleportation esper, one whose power can be stored in batteries Quasar also happened to already have in its possession, so they're covering the teleportation cost for Haru to get there.
Bell and Jaeha
traceless
The dungeon is timed conveniently for Jaeha and Haru to walk (not fly, Haru's still burning off dungeon backlash) to the QQ meetup with Haru in a chatty mood. "Hi folks! It is I, the scourge of Malaysian bigotry!"
traceless
Haru sits next to him. "Cricket referred to you as a 'useful assistant' the other day," he tells Woo-young. "In among other remarks but still."