The dungeon looks like a snowglobe. The tallest buildings in the little model city are about seven feet tall, cute and glass and glowing with inner light. The streets are just barely wide enough to admit a person on foot. Big flakes of glitter drift slowly through the air. Knee-high model trees covered in flocking sprout from the model park. There's a tiny church, tiny stores with illegible signs. There are no model people. There are in fact no monsters at all, in this one. Just the city, and the snowflakes -
- and the fact that whenever one of the victims, drifting to the ground from the high dome of the ceiling in the low gravity that mimics thick snowglobe fluid, gets within reach of the buildings, the entire dungeon shakes violently and gravity reorients a dozen times in quick succession, the glitter kicks up from where it's settled on the roofs and the roads, and the screaming victims fly vertiginously into the air again while the city clings innocently to the floor.
So they want Traceless more for the flight that doesn't care much about gravity, than for the tracelessness; there's nothing to be invisible from (he checks) but quite a lot of roofhopping so that when the time comes he can push off one inch from the top of the little school or the miniature library and ignore his vestibular system till the dungeon settles and he can push off to grab another victim.
When he's grabbed his first few victims to tromp through the streets with each of them in turn them clinging to his back, he sees that the other esper in the dungeon - a no-codename guy named Noah with spiderclimb powers, not one he's worked with before, Haru thinks he's from Winnipeg - has located the core; he broke open the big glass water fountain full of glass water in the town square to find it nestled inside. Noah hands it off to the SWAT guys, who have an anchor dug into the glass floor that they're all firmly clipped onto. They keep crunching the shards from where the anchor displaced bits of glass, under their boots. In a monsterless dungeon having them there at all is perhaps redundant. The dungeon could always surprise them, though. Maybe the clocktower will wake up. Maybe the trees will, or the glitter will coalesce into a boss monster. Both espers return to work.
Haru brings his next victim to the portal. Just within sight of it, the dungeon shakes again; he hovers, nattering to his passenger about how the timing seems irregular, how the photos are going to be great, how he apologizes for pausing to take photos when it cost a few minutes. The dungeon settles, and Haru lands and starts forward again -
Then he shoves the victim off his back and shoots through the air straight at one of the SWAT guys, who's raising an axe over the dungeon core.
Haru tackles the still-intact core in both arms and goes with it through the guy and his axe both. If he hadn't been flying, this would have been a dubious idea. Given that he has been, it's nearly suicidal.
He curls up on the glassy floor in a fetal position around the core and can't figure out why he bothered. He leaves it to the sergeant to scream at the SWAT team; it's background noise. He leaves it to Noah to fetch the remaining victims, even though he's much slower at it because he can only reach the ones who come within life-preserver distance of the city or the ceiling. He lets the SWAT sergeant take the core from him, and heave him out the portal, to drift to the ground, where somebody turns out to have called Tess, or what looks like Tess anyway. He had his arms full of dungeon core, so he didn't grab any glass shards, and doesn't have anything he can do about how wretched it feels to exist. He leans in when Tess hugs him automatically even though Tess is imaginary. He lets Tess bundle him into the car to get to the transfer point about the Ablinger marble that can take him to Fox Island.
Tess makes sure the car is on the right trajectory, pats Haru down for anything sharp stuck in his clothes or tucked into his pockets, and then she calls Jaeha.