Curate, connect, and discover
Danny does not come out of the portal.
In fact, he’s lost. Very lost. He just wants to go home and is getting scared of everything around him because he doesn’t know what’s going on. But! But he’s found an (admittedly also terrifying) castle or keep or whatever they’re called that all the ghosts avoid!
It never exactly enters his mind that they might have been avoiding such a place for a reason.
In unrelated news, the first thing Fright Knight sees after his sword was (accidentally) knocked free from its prison is not a blob ghost- they’ve done it a few times over the eternities- but a ghostling. A newborn ghostling, who promptly bursts into tears to his genuine horror. What did he do?!