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.
Jaeha doesn't succeed at broaching the terrifying horrible mortifying subject—mostly because it doesn't even occur to him to try, it being terrifying and horrible and mortifying to think about—and it is still too early in the year for the Rainbow Fountain shows to happen, but it is nevertheless a really nice date with his extremely cute boyfriend and he even manages to get over himself and not obsess over the fact that there absolutely totally are people thinking homophobic thoughts in their direction for a good fraction of the time! A success, in his opinion.
And then they can go home for the evening. And probably have sex. Because of the narrative powers of picnics.
Jaeha was not aware of the narrative powers of picnics pertaining to sex but is he ever going to refuse Haru anything? That's right, he is not.
Jaeha doesn't figure out a way to do the terrifying, mortifying, horrible thing over the next day. He also doesn't think about his mother, because that sounds like a can of worms. He also doesn't want to think about Lee Tae-gun, not for now, not until he does his first dungeon.
...
He's just been doing a lot of introspection and thinking about hard things lately and it's made his brain kind of fried and he has no idea how Haru does it every day except that it's obviously because Haru is perfect in every way. Jaeha, however, is not, and needs breaks from trying to get his brain to do difficult and unpleasant things. Which means he isn't the man of Haru's dreams, either, because the man of Haru's dreams wouldn't just run away from his problems like Jaeha does, but he thinks he's probably on a good trajectory? He might eventually become the man of Haru's dreams, someday? But not if he burns himself out completely on the concept of having thoughts, which he was risking, there, for a bit.
Gahh. It's fine. They have a dungeon to do together.
App working? Gear all checks out? Is Haru scouting or do they know what this one looks like?
"Ready?" Jaeha asks... himself, really. Of course Haru's ready. But he still needs to ask.