I PRETTY SURE Kurono is going to die in this Arc , then
someone most likely the old guy or Rayka will bring him back to life ,
I mean for Kurono to have a happy End with Tae seems unlikely to happen(he still has to figth the Vampires and his Brother),and about the Powerful weapon I think is to actually become a GANTZ(like the guy in the Metalball! :!:
Everything else sounds boring....What do you think?