The room Kurono's stuck in has the most diverse cast yet since people from all walks of life got isekai'd into there at roughly the same timespan. They've got superhumans, someone who completed the game before, a TV star, gangstas from the Good, and even a panda.
Gantz actually gave Kurono some time to prepare before he gets deployed but it looks like sitting it out's out of the option from now on. He has a quota to fulfill to survive now, shit!