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.
"I haven't seen very much of you-collectively but it is at least not blatantly inconsistent with your self-description."
"...you know what, we've got a QQ meeting soon. That's, uh, the LGBTQ peeps, Queer Quasar. We usually hit up bars and stuff. Why don't you come? Both of you. Drinking with gays is always a great way to suss some vibes."
"I don't drink, if I ever decide I want to spend some time less sane I would go flying recreationally."
"You don't need to drink, we've got plenty of people who don't. ...I guess maybe you wouldn't like a drinking atmo?"
"Aces! Great timing, it's Friday at 8, I'll text you the address.
"...ah, Kang Jaeha-nim—"
"It wouldn't just be 'for a drinking night' though, to be clear, this is a substantial career move to be considering, one can visit one's prospective workplace and meet people there even if this requires hopping a plane."
"I would also not let you hop on a plane for that, either. ...unless you told me to but."
"What's gonna happen when I try to visit my dad, huh, do I also get to teleport across the Pacific Ocean because" the dick is that good "I have the good fortune to know you?"
"It's a charity that provides long-lasting insecticidal nets to populations at high risk of malaria. Over half a million people die of malaria per year, most of them children, and giving them these nets is a very cost-effective way to substantially reduce the chance that people will get infected at all."
"It's part of one! And it was fresh on my memory. Plus, it was a very impactful description."