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.
Haru snickers and waves at the new folks. Fistbumps, which as he has asserted should be standard?
"So what are your powers? Kang Jaeha-shi," because she can be talked down from -nim but she agrees that going without altogether is a bit much, "is psychic...?"
"I can completely shield someone's mind from external influence, and erase any that exists in its entirety. I can also project immersive illusions, and not even monsters are immune to those. Or, at least, there exist some monsters that aren't, I can't rule out the possibility that some are."
...is he being humble or something? Seungjoo is pretty sure people wouldn't talk about him and Nightmare together so much if it were just that, lots of psychic espers can do that.
He'll Google it later.
"I can turn selectively imperceptible. If you have exotic sensory powers don't try to use them on me, it won't work and I'll get random little upticks of backlash till I figure out who's being rude - I can let them through but by default I go around observable by normal channels to humans and not at all to monsters and to dungeons themselves. I can at greater expense also fly, and I am looking forward to reliably having a high-bandwidth backlash clearance mechanism so I can ever do that for fun instead of just to get over pit traps and stuff."
"You know," says Ha-eun, leaning back over from her conversation with her friends after overhearing Haru's power description, "I went to a dungeon that had that power, once. You couldn't see its portal or its monsters and if you went in it was pitch black. Pain in the ass to clear."
"Come on, that one was weak. You usually put more effort into making your stories believable."
"Well now I want to know who'd win if there were a dungeon like that and I got into a fight with it."